The concept of this game is good, but the execution itself is really clever. If I were to make a game with this idea, I'm not sure if I'd come up with mechanics such as holding left to negate the right arrow. It's genius, and you end up playing twister with your fingers.
The presentation is great too. The visual style is simple but done very well, and shows you don't have to go bonkers to make something look nice. The pitch of the sound effects increasing with each subsequent press was a great touch too, it reminds me of Crash Bandicoot when you bounce on crates in succession.
Really good job ^-^