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 reward 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.
Review by dustinmyglass on Cargo-Bot.