Color Block

Color Blocks (カラーブロック) are multiple colored diamonds, that can be found at Special Stages on large groups and are able to break through. At the beginning, these obstacles are colored blue before the player touches it and turns to the green after first touching. The second touching makes it to yellow while the third one makes it turn on red. After the last, fourth touch, the Color Block will disappear out the way.

Color Blocks are first seen in original 16-bit version of Sonic the Hedgehog, where obstacles are found surrounding one six Chaos Emeralds at Special Stages, where the player has to drill through to get Chaos Emerald. These Color Block groups are even more larger on two Special Stages, that are based on the wild arenas instead of mazes. Color Blocks make appearance in Special Stages of Sonic the Hedgehog 4: Episode I, with similar role. In this game, it is shown that Color Blocks start shrinking every time, when the player touches it and finally disappear completely.