Game instructions example
Ribbit back
  1. Stand in a frog position next to the player you're going against.
  2. Decide who's the pusher and who's the leaper.
  3. The pusher should suddenly push the leaper and leap backwards.
If the leaper hits the pusher before the pusher's bum touches the floor, the leaper wins else the pusher wins. 		https://chrisandvin.co.uk/Games/Game1.html