The level 3-8 is focusing on the block moving mini game. Here the player has to move the block from the beginning of the level till the end. Once the end will be reached, a timer will start and the player will have to go back to the level start point. Everything else is game mechanics recycling.
Btw, I finished the level 3-9 and 3-10 as well!! I now have 30 levels completed!
