(title in work)
Not much different from version three. There were some different obstacles and the two unlockables, but that was it. The game play is a little bit stale by version 3. Also, I would have liked some more intuition in some levels. Most of them are just wide open and you have to just run in circles for a while. Some smarter enemies could be nice too. They all get stuck on walls too easily. Especially in the maze level.