The mini game with the green cube is horrible, as it slides it's hard to manage the velocity, but the worst thing is that you have a game over even when it doesn't touch, you just have to be too close to the red blocks and you lose, so even when you're good, well the game tells you no, these levels are horrible.
The other minigames are okay, they're fun, but the dev went crazy on the 3D level where you don't choose the POV.