Blocks Slim is found in advanced in challenge mode and in world 4 of story mode in super monkey ball deluxe. It is very similar to the level 'Blocks', however it has several blocks missing in the center of the stage, preventing the player from reaching the goal by going straight forwards. These blocks periodically extend out seperately, then all come back together, therefore the player must move when they are connected and try and stay balanced when they are disconnected. The stage has 4 still platforms (one with you on, the opposite one with the goal and the other 2 with a banana bunch). This stage isn't to difficult to conquer.