This is a really good engine. Thanks alot! I found some bugs: Player projecttiles have endless range in pvp. Player projecttiles can attack other players when they are more then 10 levels below. They can even attack admins lol :P. Player projecttiles can hit other players through blocks. Unrecoverable dx8 error. I only got this once when I was moving a item from the far left up to the far right down in the inventory. Item class requirements doesn't seem to work. Not a bug, but maybe you could implement that you can stun a player? Oh, and can someone explain me the weight system and how you can change the spawn point?