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 locks game modes behind paid DLC – and fans aren't happy

Sega explains why a Sonic Mania sequel didn't happen

Review - Sonic Origins - WayTooManyGames

Sonic Origins Plus Review - Noisy Pixel

Sonic Mania review

Sonic Frontiers has swiped the best part of Sonic Mania

Sonic Mania Adventures (TV Mini Series 2018) - IMDb

Sonic Mania dev confirms they helped with Sonic Origins Plus

Sonic Origins review: A blast from the past

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

Sonic Mania Developer Headcannon Confirms Involvement with Sonic Origins