Antigen
A downloadable game for Windows, macOS, and Linux
Your goal is simple: Develop the perfect antibody and save the world.
Shoot, dash and mutate as you attempt to save an infected host from death.
Any pathogens that stand in your way must be neutralize.
- Traverse through infected areas of the host using blood streams
- Choose how your antibody mutates as you adapt to various pathogens
- Find various enzymes - such as Protein Layer and Sterilize - to help survive
- Some pathogens are lethal to the host and will kill them
- Watch out for inflamed areas that will harm the host
| Status | Prototype |
| Platforms | Windows, macOS, Linux |
| Author | niwasobi |
| Genre | Shooter, Action |
| Made with | Unity |
| Tags | 2D, Fast-Paced, Indie, No AI, Roguelike, Sci-fi, Short, Singleplayer, Top down shooter |
| Average session | A few minutes |
| Languages | English |
| Content | No generative AI was used |
Development log
- Anitgen 0.1 is out!Feb 20, 2026






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