Move Gengar around to avoid Mewtwo's blasts of invisible power and click Mewtwo to kill him. ~~~ Saving Data of the times you defeat the boss. ~~~ Added coins and you now can revive (for 1 coin) by 1 HP. ~~~ Revive with the up arrow button. ~~~ Up attack with the dagger button (cost 26 coins).
8/14 Fixed the fact that Mewtwo didn't fight back. Be careful of the Shadow Balls! Check out the Pokemon Games Studio for more pokemon games and remakes.