You, the player, accidentally walks into a cave, not knowing what is in it, then you get sucked into a hole and fall into the world of Aciknowim. For game mechanics, you should make it so you walk up,down,left,right, then, when riding a certain thing, you make the world round.In The caves, you should make it so you walk left right. You should be able to chose your class like mage,thief,warrior and