Raiden III is the follow-up to the early 90's shoot 'em-ups Raiden and Raiden II. Once again you control the Raiden "Fighting Thunder ME-02" trying to fend off the attack of the alien invaders. There are in total 7 levels, the first three set on Earth and the last three in space. This is a vertically scrolling shoot 'em-up. (mobygames.com)