Clever idea and implementation! It looks like you originally were going to have the cards be purchasable (that's the number at the bottom of the card, right?). That would have been neat to see. 🙂
- A really helpful tool would be to have a key that resets the ball back to the top-left. Right now, it feels like I have a single shot to build my maze before trying it out, and if it doesn't work, I have to restart the whole game.
- Is the trash can broken? I couldn't get that to work.
This would be fun to play if it were fleshed out more. Great job for the short timeframe!