Games like Once Upon A Siege

59%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

67% User Score Based on 306 reviews

Critic Score 51%Based on 9 reviews

Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat. Defend the planet from the human scum in the final battle of the series. Anomaly Defenders is a fast-paced Tower … If you enjoyed this game, see our list of games similar to Anomaly Defenders.

83%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, optimization

87% User Score Based on 1,360 reviews

Critic Score 74%Based on 8 reviews

It’s Knights vs. Vikings in CastleStorm, where medieval warfare meets 2D physics-based destruction! Controlling the battle in real time, players will harness the power of medieval artillery, manage a fearsome ground attack, and cast powerful spells! CastleStorm features a story-driven solo campaign, a custom castle editor, online multiplayer, co-op modes, and more. Building castles and knocking th… If you enjoyed this game, see our list of games similar to CastleStorm.

76%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

76% User Score Based on 868 reviews

MarZ Rising is a tactical base defense game, which lets you discover a completely new gameplay experience of the tower defense genre! Build, manage and defend your martian base. Guide your crew safely through the thrilling campaign and solve the mystery of the undead. If you enjoyed this game, see our list of games similar to MarZ: Tactical Base Defense.

77%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, optimization

78% User Score Based on 2,144 reviews

Critic Score 33%Based on 2 reviews

Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the Tauron droids' homeworld against a relentless invasion. Will your Taur stand against the Imperion warmachine? If you enjoyed this game, see our list of games similar to Taur.

83%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:stability, grinding

93% User Score Based on 1,918 reviews

Critic Score 73%Based on 9 reviews

X-Morph: Defense Complete Edition includes: X-Morph: Defense core game, European Assault DLC, Survival Of The Fittest DLC, Last Bastion DLC If you enjoyed this game, see our list of games similar to X-Morph: Defense.

 A retro arcade space shooter brings about the new age of color and mayhem!  Protect the Planetary Defense Shield (PDS) from the onslaught of the alien Klaxxack invasion.  Kill enemies to generate points to power your PDS and your power ups! Decide second by second what needs more points, your offense or defense in this bullet tactical mayhem experience!  Recharge, shoot, win! Defen… If you enjoyed this game, see our list of games similar to Quaxum Color Mayhem.

65%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:graphics, grinding

65% User Score Based on 161 reviews

Alien Hallway is a totally new action- strategy shooting game for the PC developed by Alien Shooter series makers, Sigma Team company. Here, in Sigma's adrenaline-fueled game, players measure stamina with a never-ending stream of green creatures within the borders of a special military mission. The rules are severe and the fate of Humanity is put on the line. If you enjoyed this game, see our list of games similar to Alien Hallway.

90%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding, optimization

90% User Score Based on 7,913 reviews

In Sanctum 2, you will have to utilize elements of multiple gameplay genres to succeed. Build towers and walls during the building phase before the enemies attack, then jump into the fray and help your towers blast everything to pieces in FPS-mode. You can progress through the single player campaign yourself, or play up to 4-player co-op with your friends to discover the secrets of the planet LOEK… If you enjoyed this game, see our list of games similar to Sanctum 2.

92%Game Brain Score

Most mentioned positive aspects:gameplay, replayability

Most mentioned negative aspects:music, grinding

92% User Score Based on 179 reviews

Mineral Defense is a unique blend of tower defense and roguelite gameplay, where the strategic possibilities are endless! Shape the battlefield by unlocking tiles and crafting the ultimate path. Plan intersections and bottlenecks to funnel enemies in the most efficient way. Fight Unique Enemies!Use combinations of towers and abilities to defeat enemies! There are many damaging and support to… If you enjoyed this game, see our list of games similar to Mineral Defense.

47%Game Brain Score

Most mentioned positive aspects:gameplay, humor

Most mentioned negative aspects:story, graphics

60% User Score Based on 30 reviews

Centauri Sector is a top down tactical space combat game powered by a dynamic turn based campaign, rpg elements, fleet management and ground base combat. If you enjoyed this game, see our list of games similar to Centauri Sector.

30%Game Brain Score

Most mentioned negative aspects:graphics, gameplay

30% User Score Based on 1 reviews

Step into the world of Siege Island, a tribute to the classic arcade game "Rampart" by Atari. Prepare yourself for an immersive 3D action-puzzle game that will test your strategic skills and reflexes. As the Orcish fleet draws near, the duty to safeguard your island from their assaults is yours. If you enjoyed this game, see our list of games similar to Siege Island.

83%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, optimization

84% User Score Based on 1,196 reviews

Critic Score 80%Based on 1 reviews

An intense virtual reality strategy game, Out of Ammo has you constructing defenses, calling in artillery, issuing orders, and even taking control of your soldiers directly in order to survive for as long as you can! If you enjoyed this game, see our list of games similar to Out of Ammo.

74%Game Brain Score

Most mentioned positive aspects:graphics, story

Most mentioned negative aspects:grinding, monetization

79% User Score Based on 616 reviews

Critic Score 58%Based on 21 reviews

"Jump into the cockpit of the most powerful tank in the galaxy and battle the maniacal Corporation ravaging Earth across a procedurally-generated campaign for 1-4 players. Playable with or without a VR headset, and available as a FREE update to Battlezone owners." If you enjoyed this game, see our list of games similar to Battlezone.

52%Game Brain Score

Most mentioned positive aspects:graphics

Most mentioned negative aspects:story, replayability

69% User Score Based on 26 reviews

An arcade classic reimagined -- build up your fortifications, place your cannons, and fire at the enemy forces! Improve your Battle Haven with powerful upgrades, including new types of Forts, Technologies, Superpowers, and Summons. If you enjoyed this game, see our list of games similar to Sky Cannoneer.

50%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, optimization

50% User Score Based on 1,558 reviews

Have you ever wanted to make a fresh start on an alien world? Eden Star is a survival game that drops you onto the alien landscape of Pharus 7, free to explore and gather resources, but you’ll want to be careful: death is permanent. You need to use resources to construct defences, craft weapons and build up outposts to protect your vital Eden Kit. With physics-based combat, free-form construction … If you enjoyed this game, see our list of games similar to EDEN STAR.

74%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:story, stability

77% User Score Based on 900 reviews

Critic Score 66%Based on 3 reviews

Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets. If you enjoyed this game, see our list of games similar to Gratuitous Space Battles.

84%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

95% User Score Based on 3,588 reviews

Critic Score 64%Based on 5 reviews

Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy. If you enjoyed this game, see our list of games similar to Infested Planet.

87%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability, grinding

91% User Score Based on 2,618 reviews

Critic Score 70%Based on 1 reviews

An inventive tower defense/ first person shooter hybrid that pits elite soldier Skye against various forms of alien life on a small set of unique maps. Skye must build and upgrade defensive structures while jumping into the fray to help her creations take down the hostile invaders. If you enjoyed this game, see our list of games similar to Sanctum.

85%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, stability

85% User Score Based on 2,187 reviews

Executive Assault is an indie real-time strategy/first-person shooter computer game where you can not only build your base and create armies, but also take control of your units and fight as one of them. If you enjoyed this game, see our list of games similar to Executive Assault.

80%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:grinding, stability

81% User Score Based on 877 reviews

Critic Score 78%Based on 2 reviews

Tower defense game with a 50-level campaign across 5 worlds. If you enjoyed this game, see our list of games similar to Revenge of the Titans.

45%Game Brain Score

Most mentioned positive aspects:graphics

Most mentioned negative aspects:story, gameplay

42% User Score Based on 55 reviews

Critic Score 60%Based on 1 reviews

A sci-fi co-op twin-stick shooter, with a progression system. If you enjoyed this game, see our list of games similar to Trident's Wake.

Gladiator's Arena is a top-down arena shooter rogue-lite where you play as a gladiator wielding up to 7 different medieval weapons to fight off hordes of enemies. Choose from a variety of upgrades and abilities to create unique builds. If you enjoyed this game, see our list of games similar to Gladiator's Arena.

Embark on an intergalactic adventure with Unearthing Invasions, a thrilling 3D Tower Defense odyssey set amidst the vast expanse of space. In this cosmic battleground, resources are precious commodities, and you're at the helm of multiple outposts strategically scattered across asteroid fields and key areas. ENERGY is the lifeblood of your operation, powering your bases and defenses. But beware, … If you enjoyed this game, see our list of games similar to Unearthing Invasions.

62%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:optimization, story

62% User Score Based on 170 reviews

PlanetariesPrepare to dive into a sci-fi open world survival adventure. Set in a time when humanity has expanded its reach beyond the confines of Earth, immerse yourself in a rich galaxy. Craft, build, mine, trade, explore, and fight your way through a living universe filled with alien life, mysteries, pirates, droids, and much more.Progression and MechanicsExplore, gather resources, and complete … If you enjoyed this game, see our list of games similar to Planetaries.

77%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:replayability, story

78% User Score Based on 82 reviews

Critic Score 75%Based on 2 reviews

Get your friends and bust out the controllers, STARDUST VANGUARDS is a local four-player dueling game inspired by old-school anime space operas, combining arcade-style battling with the ability to summon your own NPC army as support! If you enjoyed this game, see our list of games similar to Stardust Vanguards.

93%Game Brain Score

Most mentioned positive aspects:gameplay, replayability

Most mentioned negative aspects:story, stability

93% User Score Based on 1,856 reviews

A roguelite deckbuilding tactics game that combines elements from 'Slay the Spire' and 'Into the Breach'. Play as a gladiator to survive. With roguelite deckbuilding and hex-based tactics, no longer bound by simple attack and defense. Make use of dodges and knockbacks to stay alive! If you enjoyed this game, see our list of games similar to Alina of the Arena.

80%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:grinding, optimization

80% User Score Based on 658 reviews

Bastion of ancient civilization, a keeper of galaxy wisdom is invaded by alien armies. Use powerful ancient technologies and defeat the attack of enemy armies! If you enjoyed this game, see our list of games similar to Ancient Planet.

58%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:grinding, music

58% User Score Based on 316 reviews

Critic Score 56%Based on 1 reviews

Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets. You will also learn more about the galaxy as you come into contact with ten other species, each with their own unique culture, history and schemes. A full… If you enjoyed this game, see our list of games similar to Horizon.

82%Game Brain Score

Most mentioned positive aspects:music, gameplay

Most mentioned negative aspects:grinding, stability

85% User Score Based on 1,092 reviews

Critic Score 73%Based on 1 reviews

Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down. If you enjoyed this game, see our list of games similar to Let Them Come.

89%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, optimization

89% User Score Based on 232 reviews

In the far future, Mankind has nearly exhausted all of earth’s natural resources. Fragile alliances between nations are tested to their limits as fierce wars ignite across land and space.MoonBase Commander puts you in charge of your own lunar territory in a quest to build the most powerful empire in space. Find, exploit and utilize valuable energy pools to eliminate rival factions. Choose the best… If you enjoyed this game, see our list of games similar to MoonBase Commander.

78%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, monetization

80% User Score Based on 408 reviews

Critic Score 73%Based on 1 reviews

Can you create the raddest spaceship? Captain Forever Remix is the spaceship builder roguelike. Voyage across the Solar System and blast apart randomly-generated enemies for spare parts. You better build a pretty tough ship, because you're gonna need it. Your little brother turned into a bubblegum mutant and is being a total butthead. He froze the Sun, poked out Jupiter's eye, drank Neptune's oce… If you enjoyed this game, see our list of games similar to Captain Forever Remix.

41%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:gameplay, graphics

70% User Score Based on 10 reviews

Starlight: Defence Command is a Tower Defence game designed for the PC that is tough and more in-depth than those gone before. With the ability to configure towers in billions of possible combinations, unlockable perks and fine tuning through target priorities, players are given powerful tools to complete the galaxy-spanning, story-driven campaign. If you enjoyed this game, see our list of games similar to Starlight: Defence Command.

67%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:replayability, stability

66% User Score Based on 280 reviews

Critic Score 75%Based on 1 reviews

Control a swarm of 32,000 drones in this strategy-adventure set in space! Jump from system to system and battle powerful alien fleets. Destroy enemy vessels, slam them into one another, block attacks and outsmart defenses. If you enjoyed this game, see our list of games similar to Drone Swarm.

93%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:music, replayability

93% User Score Based on 183 reviews

Build your base. Construct towers, traps, mechs, and other defenses. Command your units in battle. Can you survive the enemy onslaught? If you enjoyed this game, see our list of games similar to Colony Siege.

73%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

67% User Score Based on 184 reviews

Critic Score 81%Based on 6 reviews

Set in a futuristic Odyssey, The Next Penelope is a fast paced action racing game with loud colors, an original story and a challenging risk-reward system. 
Weapons can be mixed and used at any time, but all these abilities cost vital energy, so the player is very powerful and close to death at the same time! As Penelope is looking for Ulysses through the galaxy, the player is free to explore the … If you enjoyed this game, see our list of games similar to The Next Penelope.

84%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, grinding

84% User Score Based on 1,214 reviews

Critic Score 85%Based on 2 reviews

"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their attention outward, away from the galaxy, to alien threats or opportuni… If you enjoyed this game, see our list of games similar to AI War: Fleet Command.

98%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:graphics, replayability

98% User Score Based on 102 reviews

Pewt 'em Up! is a retro inspired arcade space shoot 'em up with lots of upgrades, achievements, extras and more. If you enjoyed this game, see our list of games similar to Pewt 'em Up!.

67%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

63% User Score Based on 729 reviews

Critic Score 80%Based on 2 reviews

Space Run Galaxy is the sequel to Space Run, the game from one-man studio Passtech, which seduced hundreds of thousands of players with its dynamic and original game play. By twisting the tower-defense game style, Space Run offered an addictive real-time spaceship construction strategy experience. If you enjoyed this game, see our list of games similar to Space Run Galaxy.

87%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:stability, grinding

87% User Score Based on 760 reviews

This Gold Edition includes Silent Storm and the add-on Silent Storm: Sentinels. If you enjoyed this game, see our list of games similar to Silent Storm.

71%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:grinding, monetization

66% User Score Based on 3,454 reviews

Critic Score 83%Based on 4 reviews

Wisecracking multiplayer action that uniquely blends the strategic depth of a MOBA with intense third-person combat as you fight in a wild battle for fortress supremacy. Orcs Must Die! Unchained is a high-octane PvP action game in which you storm the opposing fortress together with your friends and defend your own base. Your enemies are also sending their minions to your rift – construct a maze o… If you enjoyed this game, see our list of games similar to Orcs Must Die! Unchained.

95%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:story, grinding

95% User Score Based on 853 reviews

Defend your dungeon with powerful traps against the greedy adventurers! If you enjoyed this game, see our list of games similar to Dungeon Warfare.

73%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

73% User Score Based on 266 reviews

Critic Score 75%Based on 1 reviews

Revolutionary Tower DefenseDANGER! Earth is under attack from a vast armada of flying saucers. Only you can stop the invasion of these relentless alien monsters - don't let a single one through! Get ready for a revolution in tower defense that will send you spinning. Defend the solar system by sending satellites into orbit around planets, moons and space stations. Create the perfect defense by rot… If you enjoyed this game, see our list of games similar to Unstoppable Gorg.

95%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:graphics, story

95% User Score Based on 93 reviews

Bullet Hell Insanity + Tower Defense Strategy. Rogue Star Rescue is a quirky new type of rogue-like shooter. Blast your way through diverse planets while rescuing your teammates and gathering traps for your defense strategy. If you enjoyed this game, see our list of games similar to Rogue Star Rescue.

77%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:grinding

77% User Score Based on 158 reviews

A turn-based Galaxy totalwar game. Choose one of 12 factions, direct dozens of admirals, control hundreds of warships, mecha and monsters, set up various buildings, study technology, and lead fleets to carry out grand strategic actions on the map of the galaxy. If you enjoyed this game, see our list of games similar to Chaos Galaxy 2.

69%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:stability, optimization

68% User Score Based on 7,582 reviews

Critic Score 71%Based on 4 reviews

Stronghold Crusader 2 is the long awaited sequel to Stronghold: Crusader, the original 'castle sim'. After 12 years Stronghold returns to the deserts of the Middle East circa 1189, with a new 3D engine and realistic castle destruction powered by Havok Physics. Crusader 2 will recapture the original game’s addictive, fast-paced gameplay and authentic castle simulation. If you enjoyed this game, see our list of games similar to Stronghold Crusader 2.

85%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:story, grinding

85% User Score Based on 140 reviews

Artificial Defense is a one man made, real time strategy game combining orbital shooter and tower defense components within an electrifying, virtual reality setting. You are the machine, a mighty computer-system defending its servers against swarms of intruding creeps. If you enjoyed this game, see our list of games similar to Artificial Defense.

75%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:replayability, optimization

75% User Score Based on 136 reviews

It's the 24th century and the colonization of space is not going well. Hyperspace opened the door to the stars, but habitable worlds are few and far in between, overpopulation is still rampant, and our civilization's appetite for resources has only increased. For over a hundred years, the incredibly rich Dust Zone sated this endless appetite, jointly controlled by the United Earth Nations and the … If you enjoyed this game, see our list of games similar to Dust Fleet.

The Glass Line is shattered. The star Oria is dying. And the entity that destroyed it all is coming back. You witnessed humanity's last defense crumble in seconds. Now you're racing against time to rebuild the hexagonal barrier protecting Oria before the cosmic horror returns to finish what it started. But every success brings doom closer—your victories summon the entity. Defend. Rebuild. Choose… If you enjoyed this game, see our list of games similar to the Glass Line.

79%Game Brain Score

Most mentioned positive aspects:graphics, humor

Most mentioned negative aspects:gameplay, monetization

79% User Score Based on 57 reviews

Win a Free Steam Key!Think you're a tactical genius? Prove it and win a Steam Key! Show us your most effective or creative tactic in Blitzkrieg Express Post a screenshot on Steam Community Hub or tag us on social media Winners receive an extra Steam key! Deadline: July 31 About the Game Blitzkrieg Express is an explosive mix of shooter, puzzle, and survival. Your enemy — an armore… If you enjoyed this game, see our list of games similar to Blitzkrieg Express.

83%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:monetization, grinding

83% User Score Based on 860 reviews

Offline Action Arcade Galaxy Shooter game Space combat arena & Spaceship builder If you enjoyed this game, see our list of games similar to Event Horizon Space Shooting.