Puzzle for programmers – Cargo-Bot Review

In this game, you have to program a crane with simple instructions (move left, up, down, etc) to perform a prescribed task (e.g. move a column of boxes to an empty column). The objective is to use as few programming steps as possible. It not only teaches programming concepts, but also rely on bad programming practices, like programs that's inefficient, hard to understand, and don't terminate properly. OK, this is a game so I don't care good or bad programming practice. I'm skeptical this is suitable for 9 to 11 year olds. Unless they are programming genius, they would probably find this a difficult game. Today I'm super happy not only I solved one of the impossible puzzle but was told I found an unknown solution - using 3 less registers than the known solution. Haha! The game hasn't been updated for awhile. I hope the developer has not abandoned this game.
Review by dustinmyglass on Cargo-Bot.