- Sonic the Hedgehog social media:
- Sonic Mania:
- Promotional artwork
- Sonic Mania Plus:
- Kieran Gates has previously done work for Sonic the Comic Online, the unofficial continuation of Sonic the Comic.
- Tom Fry on Twitter. Twitter (15 June 2017). Retrieved on 21 June 2017. "Tom Fry: Been dying to do this, now I am. @pietepiet @TheGatestormer @midio are my brothers in art on #SonicMania. It's been the biggest pleasure ❤️😘"
- Kieran Gates on Twitter. Twitter (31 October 2017). Archived from the original on 29 March 2019. Retrieved on 29 March 2019.
- Kieran Gates on Twitter. Twitter (6 August 2018). Archived from the original on 29 March 2019. Retrieved on 29 March 2019. "Well hey look at this big ol' piece of #SonicManiaPlus art! I hope everyone likes it :) love making pieces like this."