Old Thief Studio games

Old Thief Studio games include Prion: Infection (Jan 4, 2024).

Every Old Thief Studio game on Steam, newest first, including upcoming releases. Talk about them with other players on PlaySpill.

1. Prion: Infection (Jan 4, 2024): Prion Protein disrupted the functions of the human brain, turning individuals into wild, aggressive mutants. As part of a special military …