Sonic's Timeline SRB2 Message Board

First of all I'll mention I wont count spinoffs as mainline cannon games (Sonic Rush, Mobile Sonic games, Sonic Racing games) I'll count the storybooks as the gameplay has kind of a development of an early boost (although as someone who played them I must say that those boosts were crappy)

Sonic Robo Blast 2 Kart

Lost Stages, Old Demos & More - Exploring the Sonic Robo Blast 2 Iceberg

Full Interview with SonicFreak94 (SADX modder, Lantern Engine and SA2 Battle Network developer) – ARCADEX MACHINA

Lost Stages, Old Demos & More - Exploring the Sonic Robo Blast 2 Iceberg

Sonic 3D SRB2 Workshop

Sonic Robo Blast 2 Wii - GameBrew

Sonic Robo Blast 2 - SRB2 Dash (WIP #2)

Modern Sonic V5.12 SRB2 Message Board

The best Sonic fan games

Toei/Junio Sonic by Masterpiece12437 on Newgrounds

Prerelease:Sonic Robo Blast 2 - The Cutting Room Floor

Full Interview with SonicFreak94 (SADX modder, Lantern Engine and SA2 Battle Network developer) – ARCADEX MACHINA

Sonic Robo Blast 2 (3D Sonic fangame in development for 20+ years) releases huge new update. [New July 2020 update.]

The best Sonic fan games