• ✓Number ten, the last on the brain-game shortlist (docs/brain-game-roadmap.md)
• ✓The MAP is the lesson, not the goal: reaching it takes a few taps, understanding the machine means having the map
• ✓The board only draws transitions the player has actually walked
• ✓It calls out the first time a button behaves differently from last time, because that moment is the concept arriving
• ✓Four machines: a three-way lamp, a bolted door, a kettle, and a code gate that only A-B-A opens
• ✓Every machine verified: the goal is reachable, the table is well-formed, and each has a genuinely context-dependent button
• ✓A draw-your-own-map mode, checked against the real machineplanned

✓ = done · ☐ = planned. Every game is built one step at a time like this.