MUSEUM OF NATIONAL SECURITY: NIGHT SHIFT -- prototype 0.1 Game concept: Chris Kalkowski. Original museum scene, Gaussian exhibit assets, mission logic, interface and synthesized audio: created for this prototype with OpenAI Codex assistance. Engine: Guassia, https://guassia.com/ This is an independently assembled prototype using Guassia's website-export runtime, not an official Guassia release or a modification of hosted Studio. The runtime bundles third-party software. Preserve licenses/ and all notices when sharing. Museum, archive access and security systems are fictional gameplay. No actual network intrusion, tracking or credential collection. No external music, sound recordings or third-party exhibit models were added. Scene geometry is rendered as Gaussian splats. Full heist: 5-minute transfer. Rehearsal: 60 seconds, separate local personal best. No online leaderboard or multiplayer is claimed.