Hi!
It was a good concept but was not executed properly. I can just hold the space bar while sitting in the corner and get free points. There is no difficulty or challenge for the player. After a while it just got boring.
I know we only had 3 hours, but still many things could be easily included like a charge system or blocks of different colors/ shapes/ sizes.
I hope you take the feedback in a constructive way and include them in your next jam.

Does the spawn rate increase over time?

"How many boxes can you destroy?"

Good work anyway