Open now · By request
BioCalibr playtest
by Headshot Interactive
A sci-fi arcade first person shooter where you use aliens as ammo. Kill your opponents to earn credits and unlock more aliens. As you fire your weapon, your 'clog' meter fills and changes your weapon type, also unlocking your ULTIMATE. Find the best combination of aliens to destroy your enemies!
It's free to ask. The developer chooses who gets in.
- Access
- By request
- On playtest since
- May 14, 2026
- Planned release
- To be announced
- Developer
- Headshot Interactive
- Platforms
- Windows
- Players
- Multiplayer, Online PvP, PvP, Split-screen PvP
- Languages
- English
How to join the BioCalibr playtest
- Open the game's Steam page with the Request access button. Sign in to Steam if it asks.
- Request access to the BioCalibr playtest there. It's free and doesn't commit you to anything.
- The developer lets players in, often in batches, so it can take a while. Steam emails you when you're in, and the playtest appears in your library.
New to playtests? How Steam playtests work
About BioCalibr
BioCalibr is a sci-fi, arcade, first person shooter game where you use aliens as weapons to kill other players. Each alien has three different firing modes that have different abilities. As you get more kills you earn credits that you can use to purchase new aliens.
In the 29th century, humanity discovers Terrafare, a distant planet overflowing with energy. Rival corporations illegally descend on the planet, unleashing mercenary armies in a brutal war for control. When conventional weapons fail against Terrafare’s powerful magnetic atmosphere, the corporations create new weapons using alien creatures as ammo. These alien lifeforms power your weapon while gaining power of their own. As their energy builds to its peak, the creatures emerge from the BioCalibr in their awakened forms, unleashing power capable of turning the tide of any battlefield
Some aliens let you fly, others do heavy damage, and some are just wacky fun. Each one has strengths and weaknesses and to win you have to switch it up!
Game-modes include free for all, capture the flag, juggernaut, infestation, team death-match, 3 team death-match, and more
Play with your friends locally with split screen, or host a game online!
From the game's Steam page.
