Chaos

Chaos came out for PC on 14 Jul 2000.

ChaoS is a Sonic fangame developed by Davie Slam, it focuses on a unique story surrounding the villain ChaoS causing Angel Island (Referred to as "Floating Island" ingame) to fall and split open. It is a platformer borrowing sprites from games such as Sonic 3, and Sonic 2 with many sprites borrowed from the prototypes of these games.