Arrow block

Switch Blocks, known as arrow blocks in Super Mario World 2: Yoshi's Island, are blocks found in the Yoshi's Island series. When activated by either jumping or striking them with an egg, Switch Blocks cause spotted platforms to flip around, alternating between safe and harmful sides. They correspond to the colors of the spotted platforms; hitting a red Switch Block, for example, causes red spotted platforms to flip. They are first found in Salvo the Slime's Castle in Super Mario World 2: Yoshi's Island, found in green and red colors. In Yoshi's New Island, they are found in Fort Key Calamity, having yellow and red colors. Internally, Switch Blocks in Yoshi's New Island share their name with ! Blocks that appear after the player hits a ! Switch.