Cute, well-executed puzzle game to teach logical thinking

This nice-looking, smoothly executed puzzle game gives a fun introduction to thinking like a programmer. Programming concepts introduced include conditionals, loops, interrupt commands, and others. My only disappointments are that there is no hint system for the three or four trickiest levels and that the game is relatively short, at 20 levels total. (But if the worst you can say about a game is "I wanted more!" thats not too bad!)

GeoffDC about Lightbot : Programming Puzzles