Sometime in 2024 a publisher called BD Games was banned from Steam, taking with it numerous smaller games. Bioprototype from Emprom Game recently returned to Steam without a publisher, and it's free to claim and keep for a while.
Read the full article here: https://www.gamingonlinux.com/2025/05/after-their-publisher-was-banned-from-steam-bioprototype-returns-and-its-free/
If you enjoy games like Vampire Survivors and Brotato, then mutating horde-survival roguelike Bioprototype is worth a look. With 24 unique characters, more than 80 organs, and the ability to adjust your own skill triggers, it offers a tremendous amount of build variety wrapped in a distinctive, fleshy theme. If you crave a little more depth and strategy while retaining the core of the auto-attacking format, Bioprototype has just returned to Steam, and you can get it completely free if you add it to your account in the next few weeks.