Build 2: Memory Game

Difficulty: ●●○ Medium · Build time: ~3 minutes

A step up: now the app has to remember. Watch a growing colour-and-sound sequence, then repeat it with the arrow keys.

The prompt

Copy and paste this into claude.ai:

Make a memory game like Simon Says. Show four big coloured pads for the Up, Down, Left and Right arrow keys, each with its own sound. Flash a sequence of pads that gets one longer each round, and I repeat it with the arrow keys. Show the round number, and say game over if I press the wrong one. Make it work with a normal keyboard.

The four arrow pads are exactly four bananas later. The app now has rules you can win or lose — not just react to a single key press.

Steps

1. Start a new chat or continue

   You can use a fresh Claude chat for each toy, or continue in the same one.

2. Paste the prompt

   Copy the prompt above and press Enter.

3. Play one round together

   Watch the sequence flash, then repeat it with the arrow keys. Try a few rounds.

4. Take turns

   Let a friend watch the sequence while you repeat it — then swap roles.

Backup demo

●Open the finished memory game

A keyboard-playable Simon Says demo with four coloured arrow pads.

Next: Build 3: Catch & Dodge →