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)

Accurate Classic Sonic in Sonic Robo Blast 2

Xubuntu Games Download - Colaboratory

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.], Page 10

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

Sonic Robo Blast 2 PSP - GameBrew

Sonic X-treme, Sonic Wiki Zone

Sonic Robo Blast 2 - Speedrun

Open Assets] - Super Sonic

Sonic Robo Blast 2: The Cyberdime Realm - Speedrun