Very simple rules. Take one point from one Pokémon and give it to another on your turn. You can't post twice in a row, and you can't take or give more than one point. The last Pokémon standing is the winner!

These are the Pokémon and their starting point values.
Bulbasaur - 10
Charmander - 10
Squirtle - 10
Chikorita - 10
Cyndaquil - 10
Totodile - 10
Treeko - 10
Torchic - 10
Mudkip - 10
Turtwig - 10
Chimchar - 10
Piplup - 10
Snivy - 10
Tepig - 10
Oshawatt - 10
Chespin - 10
Fennekin - 10
Froakie - 10