Addictive.
Not only was this fun to play, it was also fun to beta test for. Yep, I was a beta tester for this.
The medals were great, the game's controls work, The gimmik is cool, the puzzles range from not too easy to not too hard, and the game is well thought out. However, I can't get gapworld to load any levels. But this is addicting notheless, and I think you did a great job. Keep up the great work!