Thank you for the feedback! I'm glad you liked it and had fun with the puzzles. Those can be tough to do solo, since you know the solution, and I don't have anyone to test them on.
I'll keep in mind your comment on block placement. I thought that some uncertainty in the placement might add to the fun, but I'm thinking that in general players do not like uncertainty about the effects of their controls, unless that's done really well as a part of the game's mechanics. I do wonder if putting silhouettes on the blocks, or removing the isometric perspective, would detract from the puzzles.