Alien World is a shoot 'em up game with levels that scroll horizontally or vertically and with a rather weird storyline and visuals. The game was released only for the Commodore Amiga, Atari ST and C64 computers. It doesn't offer anything new to the genre but its gameplay is simple and quite straightforward.
STORY / GAMEPLAY During a time of legends the world was doomed into darkness. The wizard of evil rules and imprisons your mind inside the body of a ferocious alien that looks similar to the infamous alien of the Alien blockbuster movie! And that was his first mistake because now you own the soul of a warrior. And so begins your action-packed quest to defeat the wizard and regain your human nature. You set forth to rescue your love interest, a beautiful girl named Merdb, held by Feg inside the Cave Of Dreams. The storyline is quite odd for a pure shoot 'em up game! Collecting pods can enhance your firepower, increase the speed of your alien(!) and activate smart Bombs. What may come up as a surprise though, is how gravity negatively affects your alien and forces you towards the hot lava (that means disaster). Overall, Alien World has all the ingredients of a common shooter game.
GRAPHICS / SOUND The game's graphics are not impressive, with the usual assortment of enemies bearing the usual assortment of destructive weaponry. The Atari ST version is no exception here and the overall visual quality not that good. The main differences between ST and Amiga are mainly spotted at the backdrops (which look quite empty in both versions) and the scrolling framerate with the Amiga being better (as expected anyway). The sound effects are the standard "boom" type explosive noises and solid laser shots fulfilling their purpose, but doing little to enhance the game. The introductory tune is nice though and it's a sampled tune (of lower sampling rate compared to the Amiga).
CPU: Motorola 68000 16/32bit at 8mhz. 16 bit data bus/32 bit internal/24-bit address bus. MEMORY: RAM 512KB (1MB for the 1040ST models) / ROM 192KB GRAPHICS: Digital-to-Analog Converter of 3-bits, eight levels per RGB channel, featuring a 9-bit RGB palette (512 colors), 320x200 (16 color), 640x200 (4 color), 640x400 (monochrome). With special programming techniques could display 512 colors on screen in static images. SOUND: Yamaha YM2149F PSG "Programmable Sound Generator" chip provided 3-voice sound synthesis, plus 1-voice white noise mono PSG. It also has two MIDI ports, and support mixed YM2149 sfx and MIDI music in gaming (there are several games supported this).