I downloaded Puzzles-In-Motion http://palmgear.com/software/showsof...03&prodID=7863 which is a clone of Sierra's "incredible machine". It's really fun. I expected the small screen to be a hinderance, but it's not.

The only drag is the unregistered copy only runs the "tutorial levels". Now that I'm registered I can run the puzzle levels, make my own levels, or run other people's levels, like "Rocket Launch" http://palmgear.com/software/showsof...03&prodID=8157