Sonic CD SEGA CD SCD

Sonic CD is a fast-paced, side-scrolling action-platformer similar in gameplay to other installments in the series. Sonic uses his trademark spin attacks to destroy the doctor's minions and collects various items, such as shield rings, shields, and speed shoes. His special attacks include the Spin Dash and the Super Peel Out. A notable gameplay feature of this installment is Sonic's ability to travel to past and future versions of the stages he travels through. Depending on the player's actions in the previous version of a level, future versions (which contain mandatory boss enemies) will change from "bad" to "good," having more or fewer enemies and obstacles, respectively.