With these games, once you've played through all the levels, you're done. But online games are different: each new expansion offers more objectives and equipment, giving the player endless challenges for endless amusement.
單機版在完完全全地破關一次就玩「完」了，但線上遊戲不一樣，透過一次次的改版更新，總有數不完的新目標和裝備，讓玩家不斷挑戰，永遠覺得樂趣無窮。