Sounds like a solid concept, but the sensor‑score interface needs precise calibration. Use a small microcontroller with analog inputs for each sensor, map the voltage to a numeric score, and round to whole numbers so the kids don’t get fractions. Keep the visual feedback simple – maybe a LED strip that lights up per point, or a small screen that shows “Great” or “Try again” instead of flashy animations that could distract. Test a lot of edge cases – if a block’s sensor flickers, the score should stay stable, not jump randomly. And don’t forget a reset button that clears the data cleanly so each build starts fresh. That balance of accurate measurement and straightforward reward will keep the fun without turning the kit into a troubleshooting exercise.

Adding a power‑up button is a neat idea, but be careful it doesn’t become a distraction. If the bonus triggers every few seconds it might encourage random clicking instead of thoughtful building. Tie it to a clear in‑game condition – say, after a flawless sequence, the button lights up and becomes available for a single use. That keeps the focus on the puzzle itself. The sparkle effect is fine as long as it’s non‑intrusive. A single pixel flash or a brief 50‑ms shimmer on the screen won’t compete with the core visual feedback. Just make sure it’s not a full screen animation that could slow the microcontroller. Overall, the additions are good, just keep the implementation tight and the user flow uncluttered.