Atmosphir is a 3D adventure game and design tool which allows users to create their own games or their own gaming levels, then play on their platform (PC or Mac) and share them by uploading to Atmosphir website. Game creators have nearly unlimited freedom to create worlds from whatever they imagine. Games can be combat or puzzle based (or both), multi-user or not, and an audience of users will jump in and try out whatever new levels/games are built immediately.