When developer OtherSide Entertainment revealed the next game from Warren Spector, best known for his work on Deus Ex and Ultima Underworld, the game was pitched as a new PvPvE stealth-action multiplayer game. But that was back in 2024, and the developer has since made a substantial change to that project, Thick as Thieves. The studio has reworked its stealth game to focus on solo and cooperative play.