Raiden was a scrolling space-themed, shoot-em-up arcade game that was originally released in 1990 by Tecmo. The game was made available on the Atari Falcon, Jaguar and Lynx, and also the Commodore Amiga and Playstation.
Instructions for playing this free flash version of the game are nice and simple, although the game itself is quite a challenge and will have you hooked for some considerable time - be warned!
Firstly click over the game with your mouse and then simply use your arrow and Return (Enter) keys to select options. During the game steer your spacecraft using your arrow keys and press the Z key to fire and the X ket to release a bomb.