Games like Orbital Defense Idle

Defend your starship in this endless sci-fi tower defense game! Form your ultimate squad of 2D heroes, permanently upgrade your spaceship's hull and defenses, and unleash powerful ultimate abilities to survive relentless waves of cosmic alien invaders in the vast void. If you enjoyed this game, see our list of games similar to We Grow Together.

About the GameGalaxy for Dummies is a ridiculous roguelike auto-battler set in a chaotic, cartoon-style sci-fi universe. Your mission? Recruit the weirdest alien commanders you can find, assemble bizarre teams, and outsmart everything the galaxy throws at you. No space academy diploma required. The StoryThe galaxy is falling apart… probably. No one’s entirely sure, but there’s a lot of shouting, … If you enjoyed this game, see our list of games similar to Galaxy for Dummies.

W.A.S.P. is an intense rogue-lite with fast-paced, enemy-swarming chaos with the action-packed shooting of classic SHMUPs. Players take control of powerful airborne ships to fend off waves of increasingly difficult enemies while navigating levels from outer space to desert planets. If you enjoyed this game, see our list of games similar to WASP.

A skill-based 2D roguelite shooter where you aim every shot, time every ability, and craft unique builds to overcome challenging enemies and bosses. If you enjoyed this game, see our list of games similar to Black Powder Magic.

A pixel-art roguelite survivors game inspired by Eastern mythology. Play as Sun Wukong and other legendary heroes, battle endless waves of enemies, craft powerful builds from weapons, relics, and skill trees, and survive the chaos. If you enjoyed this game, see our list of games similar to Wukong Survivors.

Build. Defend. Survive. Expand. A sci-fi base-building game on a hostile alien world. Gather resources, build a sprawling high-tech colony, and defend against relentless alien threats—then unlock new planets, new challenges, and the secrets of humanity’s last frontier. If you enjoyed this game, see our list of games similar to Lost Galaxy: Echoes of War.

Cell Defense is an incremental tower defense set inside the body. You command a single antibody at the center of the cell while viruses, bacteria, and mutating swarms pour in from every side. Survive, bank what you earn, and pour it into weapons, cards, and upgrades that shape your build and push the next run further than the last. Survive, earn, repeatPlan a build, start a run, and collect the… If you enjoyed this game, see our list of games similar to Cell Defense.

Aethinion. Spin the reel, trigger powerful combos, and conquer a 23-level roguelike dungeon crawler in this turn-based RPG with slot-machine combat. If you enjoyed this game, see our list of games similar to Aethinion.

A fast-paced roguelike space shooter where every credit counts. Fight through dangerous sectors, upgrade your ship mid-battle, and convert your earnings into permanent power. Because when you die, you keep what matters. If you enjoyed this game, see our list of games similar to Project AionIX.

79%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, music

81% User Score Based on 48 reviews

A fast-paced ARPG / roguelike hybrid with lasers, alien bugs, WASD / twin-stick controls, random loot, and procedurally-generated levels. Wield legendary weapons, unlock devastating skills, create overpowered builds – and turn your enemies' attacks against them. Try the free demo! If you enjoyed this game, see our list of games similar to Combat Complex.

The Drawn Hour is a haunted-terminal card roguelike. Dial into a cursed dial-up BBS as one of three operators, build a deck, and claw through three corrupted sectors. Manage your rising Corruption, hunt relics, and face what waits at the drawn hour — alone, or in 2–4 player online co-op. If you enjoyed this game, see our list of games similar to The Drawn Hour.

A dark fantasy turn-based roguelike RPG with 25 classes and deep buildcraft. Climb the tower solo or in online co-op for up to 4 players, combine talents and equipment, and adapt your party to every run. If you enjoyed this game, see our list of games similar to Edroseph's Tower.

70%Game Brain Score

Most mentioned positive aspects:gameplay, humor

Most mentioned negative aspects:story, graphics

100% User Score Based on 30 reviews

Critic Score 50%Based on 3 reviews

Raze the road less traveled with your Vulvehicle, the ultimate all-purpose armored combat machine! Whether flying through the sky, or burrowing deep underground, these gals stop at nothing to blast through terrain and enemies alike in this comical action STG! If you enjoyed this game, see our list of games similar to Armored Lab Force VULVEHICLES.

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.

Start gathering resources by killing enemies, claiming the end level chest rewards, finishing missions, or sending pets to gather rewards for you while offline. Use gathered rewards to upgrade your player stats, improve your gear, get some pet companions, or unlock more features. Every few levels, you will encounter strong bosses that will make you question your upgrade decisions, pl… If you enjoyed this game, see our list of games similar to TION: Hero Awakening — Idle RPG.

Defend massive interdimensional portals against relentless alien swarms in this fast-paced sci-fi top-down survival shooter. If you enjoyed this game, see our list of games similar to Lost Galaxy: Survivors.

A rogue-like sci-fi Tower Defense strategy game with infinite replayability! If you enjoyed this game, see our list of games similar to Rogue Station Defense.

Card Storm Idle HD is a Free to Play incremental game that blends idle and active play. Explore and build your card deck, master three attack modes to earn tons of resources! Summon Heroes to your aid, build up your power, and see how far you can go. Unleash a card storm on paper monsters! If you enjoyed this game, see our list of games similar to Card Storm Idle HD.

Revive and team up with your past selves in a single-player survivors-like. Each rescue adds a full loadout to the fight, with up to 6 weapons per self. Arm a whole line of past selves, discover weapon fusions for stronger builds, and blast through a twisted office. If you enjoyed this game, see our list of games similar to Welcome Back to Work.

Intergalactic Defenders is a retro-inspired space shooter combining fast-paced arcade action with rogue-like progression and handcrafted pixel art. If you love classic shoot 'em up (shmup) gameplay with modern upgrades and replayability, this is your next obsession. The year is 2187. Humanity's colonies are under siege. The alien Caedons have launched a merciless invasion — and you're the United … If you enjoyed this game, see our list of games similar to Intergalactic Defenders.

Build and defend a mining operation on a distant planet in this tower defense bullet heaven shooter. Build and upgrade defenses, fight off waves of enemies from a rival corporation, and earn enough credits to buy your body back and escape this deep space hellhole. If you enjoyed this game, see our list of games similar to Polydangerous.

Vector Storm is a fast-paced top-down arcade shooter that rewards aggression, precision, and smart builds. Fight through endless waves of escalating enemies, survive devastating boss encounters, and grow stronger with every run. Survive. Build. Repeat. Each run drops you into an arena that gets deadlier by the wave. Clear enemies to earn credits, spend them in the mid-run shop on weap… If you enjoyed this game, see our list of games similar to Vector Storm.

Glyph Gambit: Endgame is a tactical grid battler powered by a real chess engine. Soulslike/roguelite runs, authentic chess movement, and tactical items create deep, replayable battles in the sequel the original was meant to be. If you enjoyed this game, see our list of games similar to Glyph Gambit: Endgame.

68%Game Brain Score

Most mentioned positive aspects:optimization, graphics

Most mentioned negative aspects:gameplay, grinding

82% User Score Based on 34 reviews

Recursive is a recursive incremental game about helping your kingdom survive by building yourself into something unstoppable. You start by clicking enemies for XP, then you turn that into upgrades that unlock more systems, more currencies, and more ways to scale. Unlock towns with their own minigames and progression, route their output back into your build, and keep feeding everything into your k… If you enjoyed this game, see our list of games similar to Recursive.

91%Game Brain Score

Most mentioned positive aspects:music, graphics

Most mentioned negative aspects:story, grinding

91% User Score Based on 152 reviews

Brace yourself for the explosive action of Let Them Come: Onslaught, a fast-paced roguelite shooter where survival means adapting, upgrading, and unleashing devastating firepower. Battle relentless alien swarms across procedurally generated stages, unlocking new weapons and stacking brutal upgrades with every run. Whether you're clearing the screen with flamethrowers, orbital strikes, or Photon Sa… If you enjoyed this game, see our list of games similar to Let Them Come: Onslaught.

69%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:optimization

92% User Score Based on 26 reviews

"Our ambition was…quantum. We truly believed we were prepared to explore the deep universe. The hubris."

Welcome to Castaway Station, an exciting survival game that takes you on an unintended journey on a hostile planet after a catastrophic accident on your space cruiser. Stranded on an unknown planet with limited resources, you must use all your wits and skills, along with any tools you scavenge… If you enjoyed this game, see our list of games similar to Castaway Station.

88%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

92% User Score Based on 3,624 reviews

Critic Score 67%Based on 1 reviews

At its core, Space Pirates and Zombies is an action based, skill oriented, top down space combat game. It's similar to the ones we knew and loved in years past, but now using full physics simulation and modern graphics for those oh so pretty explosions. But as you dig deeper, SPAZ becomes much more. If you enjoyed this game, see our list of games similar to Space Pirates and Zombies.

95%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

95% User Score Based on 3,588 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.

91%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, replayability

91% User Score Based on 1,860 reviews

Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home. If you enjoyed this game, see our list of games similar to Starcom: Nexus.

84%Game Brain Score

Most mentioned positive aspects:graphics, gameplay

Most mentioned negative aspects:story, grinding

84% User Score Based on 83 reviews

Epic sci-fi tower defense action with 16-bit era look and feel, pitching your colonists against an almost endless horde of hostile alien robots who strongly oppose your attempts of colonizing their planet! Deluxe version includes the soundtrack! If you enjoyed this game, see our list of games similar to Alien Robot Monsters.

A 2D pixel art tower defense game with unparalleled strategic depth. Deploy modules to redirect enemies, use tactical chips to command the battlefield, and upgrade towers with multi-branch modifications to protect humanity's vital Stellacore energy. If you enjoyed this game, see our list of games similar to Stellacore Defense.

Shoot. Upgrade. Die. Repeat. Defend against endless swarms in this minimalist idle tower defense. Construct an impenetrable fortress, research game-breaking tech, craft legendary gear, and harness cosmic abilities like Black Holes and Orbital Strikes. How deep into the Void can you survive? If you enjoyed this game, see our list of games similar to Endless Void: Idle Tower Defence.

Pilot one of three ships through an endless procedural bullet-hell roguelike. Dodge escalating formations, hunt evolving bosses, collect run-defining relics, upgrade five weapons and destroy massive multipart Apex Colossi. If you enjoyed this game, see our list of games similar to XenoVector.

Match colors to survive enemy waves. Control and upgrade your rotating ship in this shooter-survival blend. Journey through space to save Kaleida! If you enjoyed this game, see our list of games similar to Chromatic Battles.

《Crystant》 is a strategy survival game that combines story-driven exploration, board game-style tile connection, tactical turn-based combat, and Roguelite progression. Explore each floor, manage resources, strengthen your team, and fight against mutated creatures. If you enjoyed this game, see our list of games similar to Crystant.

55%Game Brain Score

Most mentioned positive aspects:graphics

Most mentioned negative aspects:gameplay, music

91% User Score Based on 11 reviews

A Rogue A.I. simulator that sits at the bottom of your screen. Take over the world while taking care of other tasks! If you enjoyed this game, see our list of games similar to Rogue AI: Idle Domination.

84%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:grinding

87% User Score Based on 47 reviews

Fight, Scavenge, Survive, and File Your Taxes. A grim yet hilarious space strategy roguelite where you must balance hull integrity against your company's relentless profit margins. Warning: Contains lethal doses of dark humor and corporate exploitation. If you enjoyed this game, see our list of games similar to NonentityGalaxy.

88%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

88% User Score Based on 73 reviews

Critic Score 88%Based on 1 reviews

Call on the elements and evolve mighty creatures as you unleash an arsenal of spells to defend against waves of enemies, all on your epic journey to seal the rift and crush the undead invaders. Choose your spells & upgrades - it's time to go elemental! If you enjoyed this game, see our list of games similar to Demonlore.

Build a sky-high industrial tower! Defend against enemies & deep space fleets. Your faction reputation persists across death, build a legacy that outlasts you. Hardcore simulation strategy. Deep industry chains & emergent narrative in handcrafted pixel art. If you enjoyed this game, see our list of games similar to Sky Scaffold.

86%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:story, grinding

86% User Score Based on 865 reviews

Welcome to Drill Core, where corporate greed meets strategic planet-mining! By day, lead an elite crew of miners, carriers, and guards as they carve a path through hostile alien worlds. Build advanced facilities, upgrade deadly turrets, and prepare for relentless nightly assaults from alien lifeforms. Will you chase maximum efficiency at any cost, or play it safe and fight to survive? Drill Core i… If you enjoyed this game, see our list of games similar to Drill Core.

84%Game Brain Score

Most mentioned positive aspects:gameplay, story

Most mentioned negative aspects:optimization, atmosphere

84% User Score Based on 215 reviews

Sodaman, he's a space agent. He must stop the hostile aliens trying to destroy the universe and save the carbonated drinks they destroyed. Maybe you should help him out? If you enjoyed this game, see our list of games similar to Sodaman.

92%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

92% User Score Based on 471 reviews

The Great Gate has opened; adventure and riches await!Welcome to the Canis Major dwarf galaxy! We hope that your trip through the Great Gate was a safe one; many of the fortune-seekers that embark on this dangerous journey never make it this far. After all, an unauthorized jump of 25,000 light years through a heavily guarded artificial wormhole is bound to cause some issues – both technical and le… If you enjoyed this game, see our list of games similar to Vanguard Galaxy.

91%Game Brain Score

Most mentioned positive aspects:gameplay, graphics

Most mentioned negative aspects:stability

91% User Score Based on 107 reviews

Ghost Signal is a VR action roguelite set in the Stellaris universe, where you captain your ship to battle a multitude of alien species. Partake in dynamic space wars, encounter planet sized creatures, gather valuable loot to conduct research, and more. No journey is the same. Will you find the origins of the mysterious Ghost Signal? If you enjoyed this game, see our list of games similar to Ghost Signal: A Stellaris Game.

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.

67%Game Brain Score

Most mentioned positive aspects:story, music

Most mentioned negative aspects:grinding, gameplay

67% User Score Based on 49 reviews

Critic Score 70%Based on 1 reviews

Steel Shadows is a standalone RPG set in the epic universe of Ancient Frontier. Take command of a rag tag band of pirates and outlaws as you fight your way across the Frontier for treasure and glory. Delve into our latest turn based tactical RPG. If you enjoyed this game, see our list of games similar to Ancient Frontier: Steel Shadows.

87%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, stability

87% User Score Based on 1,142 reviews

Buggos is an RTS Auto Battler where you direct a bug swarm to conquer the planet from the dirty resident humans! You unlock evolution points when defeating the humans in battle allowing you to customize your bug swarm. You are the bad guys! You are the evil bugs! You are here for blood! If you enjoyed this game, see our list of games similar to Buggos.

90%Game Brain Score

Most mentioned positive aspects:gameplay, music

Most mentioned negative aspects:grinding, stability

92% User Score Based on 29,778 reviews

Critic Score 83%Based on 2 reviews

The Lich has thrown the world into a timeless loop and plunged its inhabitants into never ending chaos. Wield an expanding deck of mystical cards to place enemies, buildings, and terrain along each unique expedition loop for the brave hero. If you enjoyed this game, see our list of games similar to Loop Hero.

71%Game Brain Score

Most mentioned positive aspects:story, graphics

Most mentioned negative aspects:gameplay, grinding

73% User Score Based on 112 reviews

Critic Score 67%Based on 5 reviews

"Developed by OneorEight and previously released in Japan under the name Earth Wars, "Earth’s Dawn" fuses frenetic side-scrolling action mechanics with RPG elements and a hard-edged manga aesthetic to deliver a deep and unique gameplay experience. From the outset Earth’s Dawn gives gamers the freedom to enjoy the game their way – from creating their own character; customization of skill trees to … If you enjoyed this game, see our list of games similar to EARTH'S DAWN.

89%Game Brain Score

Most mentioned positive aspects:story, gameplay

Most mentioned negative aspects:grinding, monetization

94% User Score Based on 3,663 reviews

Critic Score 85%Based on 26 reviews

SteamWorld Heist is a game about space adventures and strategic shoot-outs. Play as Captain Piper and recruit a team of rag-tag robots to explore and scavenge the remains of a destroyed world. Board enemy spaceships and command your crew in a unique variety of turn-based combat, where the outcome is determined purely by your own skills. If you enjoyed this game, see our list of games similar to SteamWorld Heist.

Descend into the abyss, navigate the dungeon, collect cards for your custom loadout, and fight monsters in turn-based combat. Death is only the beginning—use Rebirth to gain permanent attributes that scale everything you do, and dive back in to try again. If you enjoyed this game, see our list of games similar to Ascension: The Infinite Descent.