Don't forger Numptyphysics. A great game, very calm and fascinating imho.

About Frogatto's key problem, I don't remember, can't you remap the keys usage somewhere in the game?

Edit: more details about Numptyphysics:

The goal is to send an object to a certain place.
It is a physics game in the mean that there is gravity, inertia, mass. levers...
So, you make a drawing (sketch type style with the stylus or the finger) and when done, it becomes an object with physical properties. The more lines you made, the more heavy it is. Then, it will begin to fall to project other objects in cascade to finally push the one you have to move. Iirc, there was a level with accelerometers use. You can also build levels.
Try it!