• ✓Idea: no two boards should ever repeat — the child stops their own picture
• ✓Press start and each shape drifts on its own path; stop it whenever
• ✓Most shapes are painted at 68%, so overlaps make a third colour — the Kidsquare logo's own trick
• ✓Circles, blobs and squares — some solid, some glass, some outline only
• ✓The other family is nested colour-band tiles, re-rolling like slot reels
• ✓Squares are cut out and dragged home (tap-then-tap works too)
• ✓Every piece is sampled at 5×5 points; a cut is only used when all pieces look different
• ✓A wrong piece won't go in — a nudge to look at the colours around the gap, a hint button, never a buzzer
• ✓Add a rotate mode — the piece has to be turned the right way up firstplanned

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