[robrtsql]

I’m not saying it could never happen, but SEGA appears to be much more tolerant of fangames than Nintendo. A cease and desist is a given for any Mario fangame of renown, but Sonic games appear to attract no attention from SEGA. Also, it’s been 25 years..

[dleslie]

On the contrary, Sega has hired notable Sonic community members and published Sonic games they've made.

https://en.wikipedia.org/wiki/Sonic_Mania#Development

[Wowfunhappy]

Sonic Mania is great, but fewer people seem to know the team also went on to create Penny's Big Breakaway independently of SEGA, and I actually liked that game even more!

[kokada]

Yes, there are other examples like the recent Sonic Unleashed recomp. I never heard of a SEGA/Sonic game receiving a cease-and-desist letter or anything similar.