Man, I have to say that Level 25 really is near impossible. This is a great game, Bonte, and I love all your other games, but really, Level 25? I've tried everything - lowering the settings for slideyness on my mouse, using an analog mouse... Nothing works. I've tried keeping it between the two panels at the top and bottom - nothing doing. Sorry, but there's no excuse for Level 25. NO excuse.
Went through it. Some of the puzzles are WAY too unintuitive to do without the walkthrough; others are just impossible (see level 20). Red Remover's much better; this just feels like a cheap, way too hard knockoff. Red Remover for Masochists, maybe.