This is a notorious NSFW (Not Safe For Work) fan game that is frequently mentioned in search results.

. This fan-made tribute to the Blue Blur has been making waves for its ambitious attempt to bring "Modern Sonic" gameplay—complete with the boost mechanic—to mobile devices.

: A 2D scrolling beat-’em-up based on the Sonic universe. It features a roster of seven characters, including Amy Rose, Rouge the Bat, and Blaze the Cat. The gameplay focuses on fast-paced action and strategic combat as players battle through levels to stop a pheromone cloud released by Dr. Eggman’s assistants.