Thick as Thieves Announced as Multiplayer Evolution of the Immersive Sim Genre

The 2026 title from Warren Spector's OtherSide Entertainment introduces PvPvE stealth-action gameplay in a richly detailed alternate-history city.

Thick as Thieves is a four-player competitive stealth-action game blending PvPvE mechanics with immersive sim design principles.
Developed by a team led by Warren Spector and Greg LoPiccolo, the game builds on the legacy of titles like Thief and Deus Ex.
Set in a 1910s-inspired alternate-history metropolis, players must outwit guards, rival thieves, and dynamic environments to complete heists.
The game emphasizes player creativity and systemic gameplay, offering diverse approaches to infiltration, theft, and escape.
Scheduled for a 2026 release, the title aims to push the immersive sim genre forward with multiplayer storytelling and emergent gameplay.