A new-school take on Sierra's 1980s AGI adventure engine (King's Quest, Space Quest), rebuilt in Rust and running here as one small WASM file — engine, paint tool, and the game The DJ's Lost Fuse included.
←↑↓→ or click to walk · type verbs + Enter (look, take fuse, use amp, talk bouncer…) · menus along the top, like the classics · 1–6 pick a dialogue reply · Esc leaves a chat.
The in-engine room editor. 1–0 tools · Z undo (just Z — no Ctrl!) · L cycles the look/walkability view · [ ] pick sprites · , . brush size. You paint two layers at once: a colour and a meaning (floor / wall / water). Making a lake? Paint with the water tag — today it's scenery with plans (the engine reserves it for swimming, like the original).
Want to keep what you paint? Hit SIGN IN (top right), make a name + password, and Save world / Load world keep your whole project on the server between visits.
F1 CRT scanlines · F2 sound · whole thing is ~1 MB · also drivable headlessly by terminals, Python, and AIs (it's an MCP server). Made by Monster Robot Party.
→ THE MRPGI BOOK — the deep manual: authoring games as JSON, AI prompt patterns, driving the engine from code, and the engine internals. Also under Game → Manual in the menu bar.