Flames likely refers to a level within Sonic the Hedgehog 2, the 1992 Sega Genesis sequel. The level would feature the same core gameplay as its predecessor: speed-based platforming, collecting rings, and defeating enemies. However, the setting and level design would be unique to Sonic 2.  Specific level layout and challenges would need further research. The level was designed by Sega.

Flames in Sonic 2

Fix it Felix Jr.