What does Sonic Mania plus add?

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Tags

1. #mania
2. #armadillo
3. #sonic
4. #squirrel
5. #original
6. #mighty
7. #digital
8. #encore
9. #release
10. #standalone
11. #upgrade
12. #campaign
13. #characters
14. #coming
15. #stages
16. #flying
17. #twist
18. #favorite
19. #remixed
20. #games