Sonic Origins got help from the Sonic Mania team

The Sonic Origins developer is actually the Sonic Mania team at Headcannon, at least partly - even as fans continue to complain about the strange pre-order DLC

Sonic Origins Plus Review - Noisy Pixel

Sonic Mania Co-Developer Unhappy With Sonic Origins Implementation of Sonic 3 & Knuckles

Sonic Mania review

Sonic Frontiers has swiped the best part of Sonic Mania

Sonic Origins tech review: glitches and a steep price make for a tough sell

Sonic Mania and Sonic PLUS

Why Didn't Sonic Mania 2 Happen? - Game Informer

New Super Sonic Mania Bros. : r/SonicTheHedgehog

Sonic Mania PS4 PlayStation 4 SM-63245-3 - Best Buy

Mania Sonic [Sonic Origins] [Mods]

No, Sonic Mania 2 Wasn't Cancelled Because of Bad Blood Between SEGA and Evening Star - Games - Sonic Stadium

Playable Amy is great, but Sonic Origins Plus is pointless if it doesn't address the original's problems