If you are seeing "ver. 1.1.0" or higher, you are on the current patch. To ensure you have the experience:
412 MB Live: April 12, 2026
The update (and subsequent major "Plus" updates) introduced critical bug fixes and stability improvements to the Nintendo Switch version. For current owners, the experience can be further expanded via the Plus Expansion Pack , which upgrades the base game to Sonic Origins Plus . Update 1.1.0 and Patch Highlights
A new setting allows players to switch Game Gear audio to Mono, fixing a common "double audio" bug that occurred in previous versions.