wasd for opponent arrows for Bf 1 for tails 2 for lord x knuckles and robotnik are not available (that's why they have place holders)
song link https://youtu.be/QxXXGMqVK3o?t=20 have fun v1.5 added encore bf v2.0 added place holders v3.0 added new lord x and bf also updated title screen v3.5 added effects v3.6 removed health bar