Connect the orange dots in the maze by rotating doors and activating portals.
Initially, walls and doors block your way, but you can rotate the doors to enable a path. Additionally, portals help you achieve your goal. Once there is a path simply touch any of the orange dots and the connection will be drawn automatically. Neat, huh?
The first levels are fairly easy but difficulty increases over time, so expect some pretty challenging levels. There can be up to 5 dots which all have to be connected and a large number of doors that can block each other. Additionally, in order to get three stars you will need to find the shortest possible connection and use the minimal amount of steps.