Very impressive amount of content for a jam game! Congrats!
Although, the game could do with a little more focus, perhaps? Things like the skill tree and save/load system are technically impressive, but don't seem to add a lot to the core of the gameplay. Once I settled on an arrangement of my available pieces there was no punishment for repeating it or incentive to explore anything else.
Other than that, the game had a good amount of polish, good art and music choice!
Good job!