• ✓The melody is scheduled on the audio clock before the first note falls — miss anything and the tune still plays whole
• ✓No fail state, no combo to break, nothing red — the number at the end counts only what was caught
• ✓Three songs on three plates painted for them: the stage, the farm and the river
• ✓The words scroll one syllable per note, checked to line up exactly (npm run verify:songs)
• ✓The hit window is a generous ±200ms, capped at half the tightest gap any lane ever has
• ✓Two players on one desktop screen — A S D F and the arrow keys, on the -2p plates
• ✓Every note is on the same music-box comb as /games/music-box — plain C major, nothing sour is reachable
• ✓Record your own singing and play it backplanned
• ✓Thai songs, and a painted place for eachplanned

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