Use the arrow keys to move. X=Gaster Blaster Z=Bone (Hold to Set Bone Trap [Must be facing up or down]) C=Push in the Direction You are Facing A=Toggle Bad Time Mode Space=Dodge/Dash Comment if you get the easter egg from actual Bonetale.
Credit to @Revilollibark for the original Bonetale. Make sure to heart, star, follow, and check out my other projects.
