Having made a similar game myself, I might be bias, but this is definitely one of my favourite games this jam.
Very well executed on all levels. The only thing I would say is, given your game is clearly 3d, having the ability to rotate the camera might have proved helpful. I found numerous times that i was unable to move a block behind another block, with it instead going ontop of said block, which resulted in me having to juggle blocks around. Being able to rotate the camera, I feel, would help with this. Regardless, i totally understand if this goes against the aesthetic you're going for, and really it is more an issue with isometrics as a perspective in general, not the actual game. Regardless, a really nice game!