Really nice game. Challenging, but not overly frustrating. This game has a lot of flexibility in terms of future versions as well, such as collecting different colored keys to open different colored doors to access new parts of the map.
This game doesn't really work for me. If I click on a dot, it just snaps to the upper left corner and the game basically locks. I have to keep reloading. Major frustration. I'm on OSX/Firefox.