It's nice to see a list of Game Updates = Not an abandoned game, in which case, feedback is pointless. The game is well made & difficulty progresses in a more or less balanced way. Like games that can introduce new mechanics w/o having to offer an info on "what to do" = Intuitive. Love that it stays true to Pure Logic, and doesn't have some crazy Go Go Go Escape Sequences in between, or any enemies for that matter. The Game is Consistent and Clear. It never throws a Cheap Curve - and even if it did, there's always the "Undo" Button, which is a HUGE Plus in these types of games. Having to Reset the entire Level is frustrating when it's all too easy to move a step too far (hit left twice instead of once). Wish more games would include this feature.
Recommendations: Perhaps a musical addition? Something simple: Ambient, repetitive. If you really want to add Replay Value, you could Add In an "Efficiency Star" for each level (kind of like 3 starring a level for this and that). This Star would be given if you can complete the level w the absolute LEAST amount of moves possible. This is possible bc this game isn't strictly a Puzzle Game, but a Problem Solver, w multiple solutions (in terms of moves). ~DoctorThrift