NOTE: This article also covers the coloured blocks activated by the switch blocks
Switch blocks are golden-yellow blocks with either red or blue switches on the top of them. The switches appear to be held on by white screws. In the middle of the block there is either a blue "X", or a red "O" imprinted into it.
There are two types of switch blocks, which can activate two kinds of coloured blocks. Switch blocks with a red lever activate red coloured blocks with O's on them, and switch blocks with blues levers activate blue coloured blocks with X's on them. When a coloured block is activated, it becomes solid and can be walked on and touched. When a coloured block is deactivated, an outline of the coloured block will be in the area the block is supposed to be.
Sometimes, the player (Turner) will have red or blue blocks on himself, and the same rules will still apply. If a red or blue colored block is turned off, the space where it will go acts as an empty space, and other blocks can occupy it. If, however, the outline of the block is in a wall when the lever on the switch block is turned, and the color appropriate block should come on, it will not.