Sonic Robo-Blast 2 (Cancelled 2D game) : Sonic Team Jr. : Free Download, Borrow, and Streaming : Internet Archive

Sonic Robo-Blast 2, prior to the 3D final game, was originally a sequel to the original 2D game.

Jenny Pope, Fabulous Angela's Wiki

Sonic Robo Blast 2 – Official Website

Archived Versions « Sonic Robo Blast 2 – Official Website

News - June, 2022

Sonic Robo Blast 2 – Official Website

Archived Versions « Sonic Robo Blast 2 – Official Website

Retro gamer №121 by Michel França - Issuu

Sonic Robo-Blast Gold : AJ Freda : Free Download, Borrow, and Streaming : Internet Archive

What are some great video games that were not very profitable for its developers? - Quora

Sonic 2 HD (2017 Demo) : Team Sonic 2 HD : Free Download, Borrow, and Streaming : Internet Archive

Retro gamer №75 by Michel França - Issuu

Sonic Robo Blast 2