Mario vs Donkey Kong

Now we enter the wild world of conveyor belts in level 1-4. Start off by climbing the ladder up and continue walking left and fall onto the conveyor belt. It will push you back so keep on jumping foward until you've reach the trampoline. Jump to reach the platform with another trampoline and from there use the trampoline to jump onto the conveyor belt. This one will move you right and the green block will stop you, but simply jump on top of the next conveyor which will push you back. Keep jumping foward and don't stop until you reach the Red Prize. Just Ignore the Key, we'll get it after the Red Prize has been collected. After you got the Red Prize fall onto the conveyor going left and duck to and let the conveyor move you under the huge set of blocks. Now jump and pick up the Key before you reach the conveyor's end. With the Key keep falling down until you've reach the bottom conveyor. Throw the Key onto the Conveyor and duck so Mario and the Key can get to the other side. Grab the Key before it expires and open the door.