SIMPLE500シリーズ Vol.2 THE 密室からの脱出 is a Japanese PlayStation 3 download‑only escape‑puzzle game developed by INTENSE and published by D3PUBLISHER as part of the SIMPLE500 budget series. Set mainly in a secluded hot spring inn, players must explore rooms, collect and combine items, and solve environmental puzzles to escape each locked scenario. The game uses classic point‑and‑click mechanics and features multiple stages of exploration, with increasingly challenging puzzles that require clever item usage to progress.