Super Mario is taking a break but Luigi is on the case. He is stuck in a creepy cave world in the Luigi Cave World free online flash game. In the Luigi Cave World game your goal is to try and help Luigi make his way safely back to his home. Run and jump through the Luigi Cave World and try to collect as many coins as you can along your way. Jump over and avoid the Goomba bad guys or else they will get you and you will lose a life. Good luck.