While there isn't a single "game" named Atelier 801, is a French independent game studio famous for creating the massive multiplayer hit Transformice . An .opk file under this name is likely a community-made port or a standalone client designed to run their games (or a specific engine) on handheld Linux-based devices. Overview of Atelier 801
: A team-based tactical shooter with a voxel aesthetic. Atelier 801.opk
: It packages all dependencies, icons, and metadata needed for the handheld's launcher to recognize the game. While there isn't a single "game" named Atelier