Ikari Warriors

Ikari Warriors is a vertically scrolling, run & gun shoot 'em up arcade game developed by SNK, published in North America and Europe by Tradewest, and released in 1986. Originally titled Ikari (怒, "Fury") in Japan, Ikari Warriors was SNK's first major breakthrough US release and became something of a classic. The game was released at the time when there were many Commando clones on the market. What distinguished Ikari Warriors were rotary joysticks and a two-player mode.