There are even non-Sonic franchise characters such as Kazuma Kiryu from Yakuza, which is just such a delightful surprise to see, Nights, Hatsune Miku, and even Doomguy.
What’s more natural an extension of the Sonic Robo Blast 2 formula than to add go-kart game mechanics? This multiplayer-focused Sonic fan game combines tons of customization with a plethora of fan favorite and obscure Sonic characters, NPCs, and badniks.