Games like Calcium Contract
Below are 18 hand-picked alternatives to Calcium Contract for fans of action, indie, ranked by imho.run's hybrid recommender. Each pick is scored on three signals: collaborative filtering across millions of Steam libraries (which players who logged hours in Calcium Contract also play), content overlap on genres, categories, and storefront tags, and review-mined "vibe" embeddings that catch tonal similarity even when the genre label differs. Sections below cover closest matches, reviewer cross-mentions, and Steam Deck–friendly options. No login required — these picks work anchor-only.
About Calcium Contract: Calcium Contract is a fast-paced first-person shooter where you're on a mission to finish a contract that got out of hand. Learn to swiftly move around your enemies and master your arsenal as you fight your way toward the grand finale. Includes a unique score-attack mode in ever-changing arenas.
Players who liked Calcium Contract also play
Ranked by collaborative filtering across millions of Steam libraries plus content overlap on genres, tags, and developers.
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hate.net
Top pick for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Calcium Contract.
An abandoned arena shooter overtaken by bots. You are a mere passerby, a witness to a world that has long been lost to fake accounts and false advertisers. Thousands before you, and thousands after you.
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AMID EVIL
Second-strongest match for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Calcium Contract.
A retro FPS for the ages! Once branded a HERETIC. Now YOU have been chosen as our champion! Reclaim our sacred weapons. Take back our ancient lands. If you can stand... AMID EVIL.
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Ziggurat 2
Third-strongest match for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Calcium Contract.
Ziggurat is back, and now it's even better! Use powerful weapons and spells to break through hordes of enemies and explore labyrinthine dungeons in this hectic roguelite FPS, while you improve your skills and discover new equipment.
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MULLET MADJACK
Ranked #4 for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Calcium Contract.
MULLET MADJACK is a HIGH-OCTANE-ACTION SHOOTER that put you directly inside a CLASSIC ANIME. Pick your favorite weapon and reach the last floor; Beat your best time or try again. Haste makes waste… OF YOUR ENEMIES!
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Guns and Nuns: Storming Hell
Ranked #5 for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action with Calcium Contract.
Demons are not the danger, YOU ARE THE DANGER!!! play as Angelica Amadeus, a nun with the power of faith and guns. Slay demons at your heart's content on bizarre stages with strange gravity fields. Get highscores to unlock more stages and weapons and teach those filthy demons their place.
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Fashion Police Squad
Ranked #6 for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action and Indie with Calcium Contract.
Even at this moment, our fashionable city is under assault. Baggy pants, dull suits, sightings of socks with sandals. A message needs to be sent, and it needs to be sent in style... Time to serve some good ol' Fashion Justice!
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POSTAL: Brain Damaged
Ranked #7 for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action with Calcium Contract.
POSTAL: Brain Damaged is a new, action-oriented take on the Running With Scissors’ cult game series with throwback graphics, and fast-paced, modern gameplay. Take a wild roller coaster ride through the twisted wonderland encased in the POSTAL DUDE’S messed-up mind.
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Rise of the Triad
Ranked #8 for Calcium Contract fans by collaborative filtering across millions of Steam libraries. Shares Action with Calcium Contract.
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.
Reviewers mention these as similar to Calcium Contract
Surfaced from review text: when other players write 'if you liked X, try Y', we catch the name and resolve it back to a Steam game.
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Earthworm Jim
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action with Calcium Contract.
Jim wasn't always a studly super-worm. He was once just a spineless, dirt-eater with no real mission in his life...
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Hollow Knight
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action and Indie with Calcium Contract.
Forge your own path in Hollow Knight! An epic action adventure through a vast ruined kingdom of insects and heroes. Explore twisting caverns, battle tainted creatures and befriend bizarre bugs, all in a classic, hand-drawn 2D style.
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DOOM
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action with Calcium Contract.
Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.
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Redneck Rampage
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action with Calcium Contract.
Well, we crash-landed that UFO in the desert and Bubba says he wants to go home. Heck, I don't blame him 'cause there ain't no place like Hickston. But according to my map, we're gonna have to blast our way through jack o' lope farms and a riverboat as well as a brothel 'fore we get home again.
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HROT
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action and Indie with Calcium Contract.
HROT is a single-player retro FPS set in a small socialist country neighboring Soviet Union (Czechoslovakia) after an unspecified disaster in 1986. Those times were dark and terrifying and so is the game.
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Heretic + Hexen
Reviewers of Calcium Contract cross-mention this title as a similar play. Shares Action with Calcium Contract.
Step into the definitive re-release of two dark spell-casting shooters that shaped the genre. This enhanced restoration makes Heretic™ + Hexen™ available to new audiences and long-time fans with expanded accessibility across more platforms and languages than ever before.
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Head-to-head comparisons
Plays great on Steam Deck
Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.
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AMID EVIL
Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Calcium Contract.
A retro FPS for the ages! Once branded a HERETIC. Now YOU have been chosen as our champion! Reclaim our sacred weapons. Take back our ancient lands. If you can stand... AMID EVIL.
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MULLET MADJACK
Deck Verified — runs on Steam Deck out of the box. Shares Action and Indie with Calcium Contract.
MULLET MADJACK is a HIGH-OCTANE-ACTION SHOOTER that put you directly inside a CLASSIC ANIME. Pick your favorite weapon and reach the last floor; Beat your best time or try again. Haste makes waste… OF YOUR ENEMIES!
- 3
POSTAL: Brain Damaged
Deck Verified — runs on Steam Deck out of the box. Shares Action with Calcium Contract.
POSTAL: Brain Damaged is a new, action-oriented take on the Running With Scissors’ cult game series with throwback graphics, and fast-paced, modern gameplay. Take a wild roller coaster ride through the twisted wonderland encased in the POSTAL DUDE’S messed-up mind.
Frequently asked about Calcium Contract
- Is Calcium Contract verified for Steam Deck?
- Yes — Calcium Contract is Steam Deck Verified, meaning Valve has confirmed it runs well on the Deck with full controller, text legibility, and default configuration support.
- How much does Calcium Contract cost?
- Calcium Contract is listed on Steam at 9.99 USD (current store price; Steam sales may reduce this temporarily).
- What games are most similar to Calcium Contract?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Calcium Contract are hate.net, AMID EVIL, Ziggurat 2.
- Who developed Calcium Contract?
- Calcium Contract was developed by Igor Aleksandrowicz.
imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Calcium Contract.
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