环栈是一个街机游戏中,用户必须建立环栈。
Rings Stack is an arcade game in which the user has to build a stack of rings of various colors. Make a stack of as many rings as possible to get the best score. The ring oscillates over a stick and the player has to fell it when it is exactly on top of it. The ring speed increases as the player proceeds with the game and fills up the stack.