The studio behind Sonic Mania helped out with Sonic Origins

Sonic Origins was finally announced yesterday, alongside a confusing amount of DLC, and Sonic Mania team, Headcannon, helped in development.
The Sonic Maniacs are back.

You Can Watch The Opening Animation For Sonic Superstars Right Now - Game Informer

Sonic Mania - Download

Sonic Origins Co-Dev Is Very Unhappy With The State Of The Game

Sonic Mania Developer Headcannon Confirms Involvement with Sonic Origins

Sonic Studio's Ivo Gerscovich talks Sonic 30th, Sonic movie sequel, licencing in new column - Tails' Channel

Sonic Mania Maker Confirms Work on PS5, PS4 Compilation Sonic Origins

Balan Wonderworld studio Arzest is the lead developer on Sonic Superstars

Sonic Superstars Review: A Star that Continues to Burn Bright - Tails' Channel

Tyson Hesse And Jasmin Hernandez On Making 'Sonic Mania Adventures' And The Latest Holiday Special

Sonic Mania is a nostalgic reminder of the series' core issues