It features remasters of the first four platform games in the Sonic series originally released for the Sega Genesis and the Sega CD: Sonic the Hedgehog (1991), Sonic the Hedgehog 2 (1992), Sonic CD (1993), and Sonic the Hedgehog 3 & Knuckles (1994). The games are playable in their original format and a new widescreen format that removes lives. Origins adds additional game modes and missions, which allow players to unlock content in an in-game museum.