Major Stryker is a 2D vertical scrolling shooter game written for MS-DOS, by Apogee Software (now 3D Realms).The game was originally distributed as shareware. It consists of three episodes, with only the first episode distributed as shareware, and the rest available commercially. The episodes are:Lava PlanetArctic PlanetDesert PlanetThe game features PC Speaker and Sound Blaster sounds, and the AdLib music is similar in style to Bobby Prince's other songs.