The Pre-Sega Dreamcast era of the Sonic (Series) series. May also apply to mainline works that use the art style and characters common to this era.
Main Games
- Sonic the Hedgehog (1991, Genesis)
- Sonic The Hedgehog (8-Bit) (1991, Game Gear, Master System)
- Sonic The Hedgehog 2 (1992, Genesis)
- Sonic The Hedgehog 2 (8-Bit) (1992, Game Gear, Master System)
- Sonic CD (1993, Sega CD)
- Sonic Chaos (1993, Game Gear, Master System)
- Sonic The Hedgehog 3 (1994, Genesis)
- Sonic & Knuckles (1994, Genesis)
- Sonic Triple Trouble (1994, Game Gear)
- Knuckles' Chaotix (1995, 32X)
- Sonic X-Treme (Cancelled)
- Sonic Mania (2017, Switch, Xbox One, PlayStation 4, Steam)
- Sonic Superstars (2023, Switch, Xbox One, Xbox Series X/S, PlayStation 4, PlayStation 5, Steam)
Spinoff Games
- SegaSonic The Hedgehog (1993, Arcade)
- Sonic Spinball (1993, Genesis)
- Sonic Drift (1994, Game Gear)
- Sonic Drift 2 (1995, Game Gear)
- Tails' Skypatrol (1995, Game Gear)
- Tails Adventure (1995, Game Gear)
- Sonic Labyrinth (1995, Game Gear)
- Sonic The Fighters (1996, Arcade)
- Sonic The Screen Saver (1996, Windows)
- Sonic 3D: Flickies' Island (1996, Genesis, Saturn)
- Sonic R (1997, Saturn, Windows)
Adaptations based on this era
- Adventures Of Sonic The Hedgehog (1993)
- Sonic The Hedgehog (SatAM) (1993)
- Sonic The Hedgehog (OVA) (1996)
- Sonic Underground (1999)
- Sonic Mania Adventures (2018)