Top similar games like Calcium Contract:

Void Collector is a fast-paced FPS where your hand is your weapon! Create a variety of hand poses to make a large arsenal of weapons and blast through a ton of stages and enemies as quickly as you can while mastering a difficult, unique control scheme!

Tear through waves of doodle enemies with your pencil. Sharpen your weapon, balance melee and ranged combat, and survive the chaos in this fast-paced arena shooter.

Interlopers is a solo-developed FPS inspired by retro classics. Wield big guns, shoot hordes of enemy robots, and explore hand-crafted levels set on multiple alien worlds.

AIR STRAFE, ROCKET JUMP, and SURF your way through dimensions in this HYPER-intensive skill-based movement shooter of old. The onslaught of foes in your way are invading worlds, and the only way to stop them is to show you will be FATAL.

KILLFLOW is an insanely fast retro-FPS set in a stylish procedurally generating world. Destroy red psychopaths with destructive weapons to save yourself from getting corrupted, and get the high score.

Eternal Challenger is a roguelite boomer shooter which aims to create retro style combat experiences and visuals with modern systems which randomize and create content.

Sydless is an ultra-fast movement shooter where your weapon is a chaotic ball that grows deadlier the more you move.

Fingerbang: All Bullets Pointin' is a fast-paced FPS inspired by both retro and modern FPS games. Fingerbang combines elements from each in order to create a mix of its own, with a scoring system added on top to gauge your performance through the different levels.

Frantic FPS game with very procedural levels

Slice, shoot, and drink tea all while being chased through tight retro FPS levels by the whispering wall of death in this score-focused corridor shooter inspired by The Club and classic 90's Shooters.

Mind the Abyss is a fast-paced movement shooter that combines fourth-dimensional abilities and ever-evolving weaponry within an alien planet.

EXUVIA is a surreal, fast-paced, FPS action rougelite set in the center of a dimension left forgotten. Clear rooms of enemies, obtain unique items, and break out of the exuvium.

ParaGlock is an experimental first person shooter, where every weapon picked up creates a new timeline you must play alongside

A mysterious castle and a mysterious artifact.

BERSERKER'S DOMAIN is a stupid, super fast little FPS with roguelike elements. Inspired by Quake, Doom, ULTRAKILL, and Blood. No load screens, tutorials or menus - just click Play and you're shooting stuff in 5 seconds. Quick play sessions and randomized runs for endless mindless fun.

The plushies have gone mad with hunger and rage. In this classic-style FPS, take control of Oslo the Brave Dog, and put a stop to their chaos as you face hordes of cute animals, equipped with a steady hand and an arsenal of strange contraptions.

Conquer the Arena in the definitive FPS Party Game! 50+ weapons worth of classic Arena Shooter action fuse with comeback Item Boxes, Random Crits and the card-based Party Mode where weapons unleash their awesome Plus-Powers and stacking Modifiers like Infection and Juggernaut change the game.

Blightspire is a fast-paced, wave-based survival shooter. Battle through a cursed graveyard as undead abominations rise in endless waves. With only your reflexes and firepower, survive the darkness in a world where death is never the end.

Clear targets in your office call center and race to the exit in this ridiculous, stapler-centric target shooter.

As the Arsenal Demon, run and shoot through hordes of robot angels to survive in an arena that changes each time you enter it. Choose a combination from a loaded arsenal of dual wieldable weapons and compete against other Demons for the best score.

Cryptonaut: A retro-inspired crypto-themed first-person shoot 'em up! Blast and evade. Collect and score. The easiest way to make millions in crypto!

Immortal Redneck is a FPS set in Egypt with rogue-lite elements. Frantic gameplay, twitch controls and an arcade-style feel meet randomly generated dungeons, a complete skill tree, permanent death and 9 classes with different traits.

Be the cactus, become the legend! Master foes, evade traps, and uncover artifacts as a spiky hero in this unique indie FPS, blending classic elements with quirky new ideas.

A fast-paced arena shooter where you wield two weapons at once across unique battlegrounds. Each round is different: new map, teams, weapons, and modifiers.

Gumblaster Mayhem is a 3D retro-style first-person shooter game where you, as a player, shoot out some gumballs using the three weapons that you must use to take down the sour mutants to survive.