The game is more like a 'pipe' puzzle where the objective is to rotate individual squares so that the red ball will have a path the silver square. Some squares are bolted in a fixed state.
1. There are wormholes that theoretically make things extra hard. But not really.
2. The Grid sizes are 4x4, 5x5, 6x6, 7x7 and 8x8. Each grid sizes has 1000 levels ranging from Beginner to Expert. That's right, there are 5000 levels in all.
I solved the first 8 Extreme levels in the 8x8 size. Not so hard.
Roll the labyrinth ball would be good for novice puzzlers.