Parent posts a famous person from history. Children post a move for them as if they were a playable character in a fighting game a la Super Smash Bros., as well as what button the move is assigned to (Neutral B, Up B, etc). You can also describe the move in detail if you want, or others can do that. Children continue until a full moveset is reached (Neutral, Side, Up, Down, and Final Smash). The moves don't necessarily have to be in that order.

Example

Parent: Sir Isaac Newton

Child 1: Side B -> Apple Throw - Newton throws an apple to damage foes. Hold down B to make the apple go farther. 1% chance of getting a rotten apple, which stuns enemies for several seconds.

Child 2: Final Smash -> Law of Gravity - Newton uses his scientific awesomeness to briefly turn off gravity on the stage, leaving his enemies stunned and flying through the air helplessly. Newton can still move around freely, and his attack power is significantly increased.