This turn: the key, its glyph on the tape, the events and the viewsrc/engine, sealed: it imports nothing and touches no clock or diceKept: each run's seed and actions (the Worker and D1)The diorama, still being builtThe game's code as a bench machine. In front is the edge: three stations, each with the controls it plays by. Each turn a key goes down, and its glyph is stamped on the action tape, which runs into the sealed case beside the seed tape. The case is src/engine: 22 files and 14,599 lines that import nothing, enforced by a test that fails the build on any import from outside or any of 13 banned globals (Math.random, Date.now, fetch, console and the rest). It keeps the map no player sees and prints the turn's events on a tape that's never kept, and the projector on its front shows every station the same view of them, no more than a player could see: the page printer is the text game that ships on 13 Nov, the robot arm is the agent harness that bots and models play through, which presses the same keys a player would, and the diorama is still being built. The run is kept as its seed and its actions (the Worker and its D1 database); because the engine is pure, they replay it event for event. Shown: the hand-written heuristic bot, on seed 82 at Stirring.