It can be still named like "Sonic 3D Flickies Island/Blast" or something, but I dont know

While Sonic 3D Blast is the North American title, Sonic 3D: Flickies' Island is the name under which the game is more widely recognized globally, especially in Europe and Japan. Given that Speedrun.com encourages using globally recognized names for clarity and consistency, it would be more accurate to list the game as Sonic 3D: Flickies' Island rather than Sonic 3D Blast.