- Sonic the Hedgehog 2: The Official Movie Pre-quill
- Sonic the Hedgehog 30th Anniversary Special ("Dr. Eggman's Birthday")
- Sonic the Hedgehog Free Comic Book Day 2021 ("Amy's New Hobby")
- IDWSonicNews (8 July 2021). Sonic movie comic book miniseries and collection officially unveiled. Tails' Channel. Archived from the original on 8 July 2021. Retrieved on 8 July 2021.