Games like Dead Zone Defense

84%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, stability

84% User Score Based on 238 reviews

4-player co-op, zombie slaying, base building, boss battling mayhem! Cleanse the infected wave by wave and upgrade your base with traps & defenses in Ultimate Zombie Defense 2! If you enjoyed this game, see our list of games similar to Ultimate Zombie Defense 2.

69%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, grinding

69% User Score Based on 4,139 reviews

The Front is a survival-open-world-crafting shooter game. Players will assume the role of a resistance fighter sent back in time to stop the rise of a tyrannical empire that has conquered the world using technology based on unknown relics. If you enjoyed this game, see our list of games similar to The Front.

83%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, stability

83% User Score Based on 1,186 reviews

Team up or face it alone in this top down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them? If you enjoyed this game, see our list of games similar to Ultimate Zombie Defense.

60%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:gameplay, stability

60% User Score Based on 560 reviews

An artificial nano-virus has wiped out humanity almost completely turning all humans into a mob of deadly mutilated zombies. Only a few people managed to survive and you are one of them.This is the world after a zombie apocalypse in which the main characters have to go through many perils. It is a story about ordinary people who, when faced with danger, decided not to run away from it, but to figh… If you enjoyed this game, see our list of games similar to Guns n Zombies.

78%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

79% User Score Based on 79,363 reviews

Critic Score 77%Based on 6 reviews

Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world. If you enjoyed this game, see our list of games similar to Once Human.

58%Game Brain Score

Most mentioned positive aspects:music

Most mentioned negative aspects:gameplay, optimization

58% User Score Based on 184 reviews

Dead District is an open-world survival sandbox where every decision matters. You start on a hostile island full of threats: wild animals, deadly traps, the infected and desperate survivors. Your goal is simple — stay alive. Build your shelter, craft weapons and tools, cultivate food, and explore the island alone or together with friends. Four unique characters are available, each ready to face… If you enjoyed this game, see our list of games similar to Dead District: Survival.

88%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, stability

93% User Score Based on 13,400 reviews

Critic Score 77%Based on 3 reviews

Dungeon Defenders is a Tower Defense Action-RPG where you must save the land of Etheria from an Ancient Evil! Create a hero from one of four distinct classes to fight back wave after wave of enemies by summoning defenses and directly participating in the action-packed combat! Customize and level your character, forge equipment, gather loot, collect pets and more! Take your hero through multiple d… If you enjoyed this game, see our list of games similar to Dungeon Defenders.

86%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

86% User Score Based on 9,762 reviews

Humanity is on the brink of extinction. From New York to Moscow and Jerusalem, the undead apocalypse continues to spread. As the end looms, a hardened few bands together to defeat the horde and outlive the dead. World War Z is a heart-pounding co-op third-person shooter for up to 4 players featuring swarms of hundreds of zombies. Based on the Paramount Pictures film, World War Z focuses on fast-p… If you enjoyed this game, see our list of games similar to World War Z.

87%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:grinding, stability

87% User Score Based on 642 reviews

Welcome to Greedland, an exhilarating top-down shooter where you play as an interstellar mercenary. Battle through ever-changing environments and annihilate waves of enemies. If you enjoy the action-packed gameplay of Crimsonland and Vampire Survivors, Greedland is the perfect game for you! If you enjoyed this game, see our list of games similar to Greedland.

70%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

70% User Score Based on 281 reviews

Survival Machine is a 4 player co-op, 3rd person, survival-adventure game set in vibrant, diverse landscapes. Navigate the ever-changing world aboard the colossal Machine that doubles as your fortress, homestead, and transport. Whether braving the game solo or with friends, explore biomes full of random challenges to gather resources, craft new upgrades, and build structures that will help you sur… If you enjoyed this game, see our list of games similar to Survival Machine.

81%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, stability

88% User Score Based on 3,843 reviews

Critic Score 72%Based on 7 reviews

Abyssus Choose your loadout, blast through the corrupted denizens of a sunken civilization, and wield godly powers in Abyssus – a fast-paced 1-to-4 players FPS and roguelite brinepunk adventure. Abyssus - Brinehunter Pack Show the style and swagger of the true Brinehunter with Abyssus' first Cosmetic Pack! - Helmet: Sea-weathered Birdcage - Dance: The Brineston - Frame: Sea-weathered Frame Abyss… If you enjoyed this game, see our list of games similar to Abyssus.

66%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, stability

77% User Score Based on 4,624 reviews

Critic Score 55%Based on 23 reviews

Buy Crime Boss: Rockay City on PlayStation Store. A '90s-inspired organized crime game starring some of the biggest names of the era. If you enjoyed this game, see our list of games similar to Crime Boss: Rockay City.

86%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, grinding

87% User Score Based on 51,928 reviews

Critic Score 85%Based on 10 reviews

You are Flameborn, last ember of hope of a dying race. Awaken, survive the terror of a corrupting fog, and reclaim the lost beauty of your kingdom. Venture into a vast world, vanquish punishing bosses, build grand halls and forge your path in this co-op survival Action RPG for up to 16 players. If you enjoyed this game, see our list of games similar to Enshrouded.

71%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, story

75% User Score Based on 343 reviews

Critic Score 55%Based on 1 reviews

Bloodsports.TV is a co-op top-down Hero Defense game. In this spin-off set in the world of Krater, take on waves of incoming enemies and bosses in this old school, fast-paced approach to strategic co-op games. Protect the glorious Missile Silo - locked on and ready to be fired at villages for a fresh supply of volunteers. Team up with your friends and form a murderous crew from a variety of Gladi… If you enjoyed this game, see our list of games similar to Bloodsports.TV.

68%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, grinding

68% User Score Based on 1,132 reviews

Earthfall is a co-operative shooter for up to four players. Using team-based tactics to fortify holdouts and complete objectives, players must work together to survive. If you enjoyed this game, see our list of games similar to Earthfall.

83%Game Brain Score

Most mentioned positive aspects:gameplay, humor

Most mentioned negative aspects:story, grinding

87% User Score Based on 102 reviews

Critic Score 73%Based on 4 reviews

Are you tired of the same boring old vacations? Then boy have we got the tonic for you! Slaycation Paradise offers the ultimate in multi-dimensional apocalyptic tours. Slay away your worries with Twin-Stick action mixed with Tower Defence as you visit the end-of-world scenarios of your dreams! If you enjoyed this game, see our list of games similar to Slaycation Paradise.

94%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, stability

94% User Score Based on 1,914 reviews

Welcome back to Zombieville, where arcade survival action and hilarious stylized visuals combine to eat your brains! Choose your weapons, grab a friend, and blast your way through the endless hordes! If you enjoyed this game, see our list of games similar to Zombieville USA 3D.

83%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

83% User Score Based on 755 reviews

Luminora, a mysterious island brimming with ancient secrets. The ancient civilization that once ruled here developed the arcane of extracting the life force of beings, which brought great prosperity to the island. However, as is often the case with eternal ambitions, their quest for divine power led them to a curse that enveloped the island in darkness. Centuries later, a wanderer caught in the ma… If you enjoyed this game, see our list of games similar to IfSunSets.

89%Game Brain Score

Most mentioned positive aspects:graphics, humor

Most mentioned negative aspects:stability, gameplay

89% User Score Based on 145 reviews

In the aftermath of a devastating zombie outbreak, the few remaining survivors have banded together to defend their last bastion of hope. In Zombie Builder Defense 2, up to 4 players can join forces in a cooperative effort to stave off the never-ending hordes of the undead. Building their fortifications with turrets, barricades, and barbed wire, players must constantly upgrade and improve their de… If you enjoyed this game, see our list of games similar to Zombie Builder Defense 2.

80%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, story

80% User Score Based on 213 reviews

Versus is a fast action twin-stick shooter from the creator of Nation Red. Create your own sandbox defense before doing battle with thousands of enemies in fast-paced top down combat. Face up to a dozen bosses. Simultaneously. Play in single player, on-line or local coop with up to 4 players. If you enjoyed this game, see our list of games similar to VERSUS SQUAD.

77%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:optimization, grinding

77% User Score Based on 3,601 reviews

Survive, exploring a vast island where everything is interactive and covered with zombies. - Build and upgrade bases using materials obtained by cutting down trees, mining up stones and collecting artifacts. - Get food through hunting and farming, cook and eat. - Build fortresses and traps to guide zombie movements to defend the flocking zombie waves. - Collect various items, weapons and costumes … If you enjoyed this game, see our list of games similar to Night of the Dead.

80%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:optimization, stability

84% User Score Based on 4,664 reviews

Critic Score 60%Based on 1 reviews

The co-op survival FPS and spiritual successor to the award-winning occult horror, Maid of Sker. Play solo or up to 4 players to survive the supernatural onslaught of the Quiet Ones. If you enjoyed this game, see our list of games similar to Sker Ritual.

80%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, optimization

80% User Score Based on 358 reviews

Stuffed is a procedurally generated first-person shooter, that takes place in the dreams of a little girl. Play as a teddy bear and fight waves of nightmares as you defend your owner. Play solo or join your friends in up to 4 player online co-op. If you enjoyed this game, see our list of games similar to Stuffed.

55%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, monetization

55% User Score Based on 389 reviews

Embark on an adrenaline-fueled 4v1 survivor (PVP) or go against AI Zombie Master (PVE) experience in 7 Days Blood Moons, published by The Fun Pimps, creators of 7 Days to Die, and developed by iLLOGIKA. The game brings a unique combination of FPS, survival horror, RTS, tower defense and a robust progression system. Will you become a brave survivor or will you crush all humanity’s hopes? Game Featu… If you enjoyed this game, see our list of games similar to 7 Days Blood Moons.

90%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, stability

93% User Score Based on 10,543 reviews

Critic Score 75%Based on 1 reviews

A single-player top-down looter-shooter game. Loot, escape, build, and eventually become a mighty bird soldier. Beware! If you are knocked down, items in your inventory will be lost! But don't worry. With your infrastructure built nicely, you will rise again soon. If you enjoyed this game, see our list of games similar to Escape From Duckov.

62%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:grinding, story

62% User Score Based on 210 reviews

The Horde Wants You Dead is a casual, top-down shooter with 4-player online co-op. Ambushed by an angry horde, you and your friends face a fight for survival against thousands of relentless enemies! If you enjoyed this game, see our list of games similar to The Horde Wants You Dead.

83%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, monetization

83% User Score Based on 2,344 reviews

Take control of one of the commandos, team up with your friends and send the Sludge God and its horde of things-that-should-never-be back to the underworld. Choose the class that matches your playstyle, pile into your favorite ride, and unload an array of gunfire, grenades, special abilities, and freaking katanas as you save the planet. If you enjoyed this game, see our list of games similar to John Carpenter's Toxic Commando.

89%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, optimization

89% User Score Based on 1,160 reviews

An isometric co-op PvE multiplayer survival horror game. It's 1998, and an ancient curse has been unleashed, trapping everyone on Mt. Bisik. When a mysterious fog appeared, people started hearing whispers and seeing monsters. Fight, explore, solve puzzles, and figure out a way to escape... together! If you enjoyed this game, see our list of games similar to Whisper Mountain Outbreak.

84%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

87% User Score Based on 8,940 reviews

Critic Score 79%Based on 5 reviews

Deadzone: Rogue is a fast-paced roguelite FPS set aboard the ISS- X, a space station overrun by rogue machines. Venture into The Deadzone solo or team up with up to 3 friends in online co-op. Wield over 30 upgradable elemental weapons to carve through enemies and powerful bosses. Improve your build each mission with augments, rare gear, and upgrades that amplify your strength and versatility. Snip… If you enjoyed this game, see our list of games similar to Deadzone: Rogue.

75%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

75% User Score Based on 18,591 reviews

Includes: Deadside Base Game Supporter Pack DLC Flags Set Hooligan Skin Set Tribal Skin Set - DragonSkin Skin set Buns on Fire Skin Set Ghost From The Deep Skin Set Beehive Skin Set Bushranger Skin Set Salamander Skin Set Jungle Skin Set Guerilla Skin Set - Dragonfly Skin Set Sandstorm Skin Set Royal flush Skin Set The skins are unlocked through purchase and then become available in painting menu … If you enjoyed this game, see our list of games similar to Deadside.

75%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

75% User Score Based on 5,242 reviews

Incursion Red River is a tactical cooperative extraction shooter based in a de-stabilized Vietnam. As a contractor to private military organizations that stand to gain from the chaos of a war-torn country, you will engage in ruthless combat, discover dark secrets, and play to your advantage as the story unfolds. Setting Vietnam has fallen into a civil war. Gangs, militia and private military organ… If you enjoyed this game, see our list of games similar to Incursion Red River.

58%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, story

58% User Score Based on 198 reviews

Outlawed is a crime-themed PvPvE first-person extraction shooter, set in a modern city overrun by gangs. Enter solo or with a squad to challenge powerful enemies and search for riches, and use everything at your disposal to make it out alive. If you enjoyed this game, see our list of games similar to OUTLAWED.

71%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:story, music

69% User Score Based on 772 reviews

Critic Score 77%Based on 3 reviews

Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology. Protect the city by building a network of defensive structures, commanding an army, and jumping into battle against dan… If you enjoyed this game, see our list of games similar to Fortified.

64%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:monetization, grinding

64% User Score Based on 2,164 reviews

# About SYNCED **SYNCED** is a futuristic free-to-play co-op shooter developed by NExT Studios and published by Level Infinite. In a world overrun by Nanos—rogue technology that has brought civilization to its knees—you will take on the role of a Runner, deploy with your squad or fight alone with your tamed Nano. Venture into the collapsed world for intense PvE and PvP combats and uncover the sec… If you enjoyed this game, see our list of games similar to SYNCED.

84%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:story, optimization

84% User Score Based on 99 reviews

The Black Pool is a 3d action roguelike to be played solo or preferably with up to 3 of your friends. Each attempt to make it back home will take you through a gauntlet of different worlds. You will discover different elements, abilities, and upgrades. Striking visuals, an electrifying soundtrack, and high-paced skilled action will plunge you into each attempt to battle your way out. THE JOURNE… If you enjoyed this game, see our list of games similar to The Black Pool.

37%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, story

37% User Score Based on 252 reviews

A Co-Op FPS game with base building in a post-apocalyptic world. Craft weapons, build barricades and automated turrets, unlock new gear and items for visual customization and kill all savages and mutants trying to destroy the remnants of human civilization. If you enjoyed this game, see our list of games similar to Band of Defenders.

72%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, grinding

64% User Score Based on 3,811 reviews

Critic Score 80%Based on 20 reviews

DO YOU HAVE WHAT IT TAKES If you enjoyed this game, see our list of games similar to ENDLESS Dungeon.

75%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, story

75% User Score Based on 291 reviews

Critic Score 75%Based on 1 reviews

Shoot, slice and surf on zombies by yourself or with friends. Fight overwhelming amounts of zombies and other monsters summoned by an evil wizard (ooOooOOOo spooky) in an early 1900s London. If you enjoyed this game, see our list of games similar to GIBZ.

73%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, optimization

77% User Score Based on 1,853 reviews

Critic Score 69%Based on 17 reviews

rom the creators of the hit VR shooter Arizona Sunshine comes an epic multiplayer VR action FPS with seamless, co-operative gameplay at its core that pits up to four players against a vast, hostile VR world in a raging fight for survival. Set in the ice-covered ruins of LA nearly 20 years after the apocalypse, After the Fall combines a living, breathing VR world shared with players from all over … If you enjoyed this game, see our list of games similar to After the Fall.

75%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:grinding, stability

75% User Score Based on 1,730 reviews

[Media 3162591] ABOUT THIS GAME Frozen Flame is a Survival RPG set in the vast world of Arсana, an ancient land once governed by the Dragons. Addled by the curse, it now beckons for souls... If you enjoyed this game, see our list of games similar to Frozen Flame.

63%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, grinding

63% User Score Based on 666 reviews

Unite with your tribe as you explore, gather and craft all you need to defend the mysterious Crucibles that sustain you from an onslaught of dangerous creatures seeking to destroy them. Trade your humanity for power in an open world, action strategy game set in the vibrant alien realm of Eden. If you enjoyed this game, see our list of games similar to Eden Rising.

63%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

62% User Score Based on 84 reviews

Critic Score 70%Based on 1 reviews

Hell is at our gates! Fight hordes of demons head-on with a team of Hell Warders, an ancient order of heroes with unique powers and abilities. Push back waves of demons with an arsenal of weapons, powerful hero skills and deployable towers. If you enjoyed this game, see our list of games similar to Hell Warders.

69%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, replayability

72% User Score Based on 390 reviews

Critic Score 63%Based on 4 reviews

Unravel a thrilling sci-fi mystery in this action-packed twin-stick roguelite shooter. Select your load-out, stack up temporary and persistent upgrades, and delve into the depths of a sinister, shifting, subterranean base in the midst of an interdimensional crisis. If you enjoyed this game, see our list of games similar to Section 13.

87%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:stability, grinding

91% User Score Based on 2,342 reviews

Critic Score 70%Based on 1 reviews

Nation Red is an ultra fast infinite play arena-based shooter providing an exceptional close-quarter battlefield experience. Fight thousands of zombie mutants and their bosses in frantic bloody gameplay while earning close to 100 perks. Fight in Barricade, Survival or Free Play mode. Play On-Line in coop, in single player or in local coop! If you enjoyed this game, see our list of games similar to Nation Red.

68%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:grinding, monetization

66% User Score Based on 482 reviews

Critic Score 70%Based on 4 reviews

CREEPS CRUMBLE. HEROES RISE. Command a team of renegade heroes and impale, slash, tear and burn through legions of undead hell-bent on world domination. Your mission: to defeat the world’s most powerful vampire, Count Necrosis. If you enjoyed this game, see our list of games similar to HERO DEFENSE.

46%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

44% User Score Based on 418 reviews

Critic Score 56%Based on 1 reviews

It is the year 2000, and the United Nations has established several quarantine zones around the world to stem the tide of an unknown virus pandemic. The United Nations called upon a private military company, highly skilled mercenaries to retrieve the data and uncover the secret of the zone. If you enjoyed this game, see our list of games similar to Zomborg.

74%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, optimization

80% User Score Based on 456 reviews

Critic Score 60%Based on 4 reviews

Time to DEPLOY! Take your friends and get ready for the epic battles in Deployment, the new multiplayer online top-down shooter game from the creators of the We Are The Dwarves. If you enjoyed this game, see our list of games similar to DEPLOYMENT.

61%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:monetization, grinding

59% User Score Based on 454 reviews

Critic Score 70%Based on 1 reviews

Company of Heroes 3: Final Stand delivers a standalone roguelite wave-defense experience for solo and cooperative play. Command and survive against fast-paced escalating enemy waves, intimidating bosses, and dynamic battlefield events. Are you ready to make your final stand? If you enjoyed this game, see our list of games similar to Company of Heroes 3: Final Stand.

60%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:monetization, character development

60% User Score Based on 190 reviews

Bullet Yeeters is a third-person shooter where miniature agents navigate oversized household environments using jetpacks. Players engage in combat across domestic settings like kitchens and living rooms, face boss encounters, and can modify their characters' appearances and loadouts. The game emphasizes aerial mobility and firefights within familiar spaces transformed into battlegrounds. If you enjoyed this game, see our list of games similar to BULLET YEETERS.

62%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, stability

61% User Score Based on 461 reviews

Critic Score 64%Based on 4 reviews

The classic Painkiller series is back! Battle through Purgatory in fast-paced co-op action, wielding infernal weapons against relentless demonic hordes. Condemned for your sins, the Voice of the Creator offers you a chance at redemption. Will you seize it or be lost to darkness? If you enjoyed this game, see our list of games similar to Painkiller.