Ef is a skill game on www.flash-game.net in which your mission is to eat, follow and discover new worlds and creatures. Follow the white arrows to find new locations and swallow those tadpole-like creatures to enlarge your size. You get points by eating your targets and other efs. The more you eat, the longer your body will be. There are many worlds and each one has a certain amount of worms--you’d better eat them up before you enter a new world if you want to summit your score. Watch out not to be eaten by other efs. Good luck!