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Calcium Contract: A Retro FPS with a Twist

Descend into the Domain of Defiance

For millennia, the Calcium Order has upheld the ancient law: "All that lives must die." But now, a defiant serpentine creature has seized an island and resists the Order’s will. You, a skilled reaper, are summoned and contracted to restore balance. Grab your scythe, board your vessel, and prepare for a unique retro FPS experience.

Blast Through 20+ Levels

Embark on a thrilling journey through over twenty meticulously designed levels, ascending the perilous island mountain towards the lair of your contract target. Experience fast-paced, '90s-inspired FPS action with a uniquely bizarre twist.

Unleash the Calcium Order's Arsenal

Wield the unique weapons of the Calcium Order – familiar yet otherworldly in both form and function. Master these weapons to overcome the challenges that await. Exploit the time manipulation system.

Outsmart Your Foes

Observe and learn your enemies' behaviors to execute a deadly dance of destruction. Be wary, as some enemies can manipulate others to disrupt your rhythm and exploit flaws.

Master Time Rewind

Everyone makes mistakes. Thankfully, you can rewind time to any earlier point in the level or jump back just seconds before your demise. Use this power wisely!

Eternal Harvest: A Unique Score-Attack Mode

Dive into Eternal Harvest, a thrilling score-attack game mode set in ever-changing, procedurally generated levels. It's a fresh and exceptionally fun way to experience Calcium Contract!

Procedural Chaos Awaits

Fight your way through procedurally generated levels that rebuild themselves dynamically as you play, offering a fresh challenge every time.

Embrace the Eternal Harvest Curses

Choose wisely whether to avoid or deliberately seek out Eternal Harvest curses. These curses increase your score but introduce quirky and challenging gameplay modifiers. High risk, high reward!

Compete for Glory

Compare your scores with friends and other players on global leaderboards. Prove your skill and strategy to become the ultimate reaper.

Daily Challenges - Limited Time

Participate in unique daily challenges. A new challenge arrives every day, but you only get one attempt to complete it! So make it count.