Welcome to S-Tyrian Hope you enjoy! Down here is a basic how-to-play tutorial: Move: Arrows or WASD Fire: Space bar Fire side-kicks: Z or M Rear-weapon mode: Enter Change sound/music state: Y Sound samples provided courtesy of me and a microphone! Tapping 'Y' will change the sound effects and music (6 different settings). There's a cheat code for infinite lives hidden in there somewhere, try your best to find it. Also Have you found the six secret levels? Good luck comrade :)