U.N. Defense Force: Earth Joker

U.N. Defense Force: Earth Joker is a vertically scrolling arcade shoot 'em up developed and published by Visco in 1993, supporting two players at once. The player picks one of four pilots, each flying a different ship with its own weapon set, and can hold the fire button to charge a stronger burst shot. Power-ups add support weapons in four varieties: front rockets, torpedoes, homing missiles and side missiles. The scenario is set in 2026, after the alien Slytow have overrun Earth and the survivors in the off-world colonies unite under a new United Nations to retake the planet.