1-Up Chamber

1-Up Chambers, or 1-Up Rooms, are hidden areas that appear in Super Mario World. They are accessed through certain Warp Pipes in Donut Plains 1, Donut Plains 3, Vanilla Dome 3,, Forest of Illusion 3, Chocolate Island 5, Valley of Bowser 1, and Valley of Bowser 3. 1-Up Chambers consist of five horizontal floorboards, each with three Prize Blocks within it. If Mario or Luigi jumps onto a floorboard, he cannot return to the one below him. The topmost floorboard has a Warp Pipe leading back into the main level.

With each tier, the goal is for Mario or Luigi to jump at the Prize Blocks in a certain order, which is always randomized. If Mario or Luigi jumps at the correct first and second Prize Blocks each, he earns a coin, followed by a 1-Up Mushroom in the third Prize Block. Jumping at the first one or two Prize Blocks in the correct order turns each one into an. If Mario or Luigi jumps at a Prize Block in the incorrect order, every Prize Block in its row turns into a Brown Block.

As Caped Mario or Caped Luigi, there is a method in which he can always hit each row's Prize Blocks in the correct order. To do so, he must perform a Spin Jump on the left side of each Prize Block from left to right.