Green Switch Palace

The Green Switch Palace is a small palace found on the west side of the Donut Plains, unlocked by finding the secret exit in Donut Plains 2, in the game Super Mario World.

Unlike the Yellow Switch Palace, this palace also features enemies. The first room has two levels. While the player may just use the above platform and take the Warp Pipe to the second room, which has the green ! Switch, there is also the option to hit the P-Switch and to defeat the Koopa Troopas on the lower level with a Red Shell. When all Koopas are hit at once, the player gets an Extra Life.

When the Green Switch in the second room is hit, all green Dotted Line Blocks turn to ! Blocks of the same color, which contain Cape Feathers when hit. In later castles, a single green ! Block appears before the boss door (Except for ), giving Mario or Luigi one more power-up before facing a Koopaling.