Incredibly easy to understand, and with an interesting gimmick!
There's a lot of games that makes you control a die and asks you to solve a puzzle on a grid, and I've seen some with a similar "you can only step here with value N" mechanic, but the execution on that one is really nice! The fact that the ground only lights up when you have the correct numbers up adds a lot to the experience.
The "bouip" sound effect is really fun too ^^
It's a great submission, good job! =)