This is one of the more unique jam games I've seen. It's fun for a while, but I feel like it's missing something. Some powerups of some kind (like a row clear, line clear, 3x3 clear, etc) sprinkled in would have been perfect.
I had some ideas for powerups/special things. But in the end, the primary loop did not engage me at all, which made it hard to continue on expanding things.