As others have said, it's pretty difficult game. You have to be exact with everything. Exact with the momentum, exact hitting the bomb button. Everything has to be perfect and that's a difficult thing to do, and tiring from retrying levels over and over. I'm surprised that I could use the R button for a quick retry after a bad move, or hit a button to use a bomb instead of using a mouse to roll over and click it. For these types of games you kinda need those features to make it less stressful.