Speed Booster

Speed Booster is a dash panel that can make any character runs faster with a boost of speed. It's appearence was in Chemical Plant from Sonic the Hedgehog 2.

After Sonic the Hedgehog 2, the speed booster was never seen in any other game after that. Until Sonic Advance was released and its sequels that are Sonic Advance 2 and Sonic Advance 3. The speed boosters also make a return in Sonic Rush and Sonic Rush Adventure.

In 2010, the Speed Boosters also returned in Sonic the Hedgehog 4: Episode I and all of the zones in the game had speed boosters in almost every area in every level They were used to help out the player on some areas. When Sonic Generations was released, this gimmick returns in some areas of the game.

Recently, Sonic the Hedgehog 4: Episode II was released and these speed boosters also make a return. Unlike Episode I, the placement of speed boosters was pretty useful; meaning some areas have speed boosters to reach a place that can be imposible to reach without it.

Function
The speed boosters allow the player too keep on running with at a boost of speed. This helps the player to keep his/her speed ahead. In the Sonic 4 saga, they most of the time help the player too reach some areas and make it to some impossible ones.