Rastan, originally released as Rastan Saga in Japan, is a fantasy-themed side-scrolling action game originally released for the arcades in 1987 by Taito and later ported to various platforms. The player controls a barbarian warrior who has embarked on a quest to slay a dragon. While his on way to the dragon's lair, Rastan must fight hordes of enemy monsters based on mythical creatures such as chimeras and harpies.
Rastan was initially ported to various 8-bit home computers in Europe (the Commodore 64, ZX Spectrum and Amstrad CPC) by Imagine Software in 1988. The C64 version of the game was notably impossible to finish because of a bug early in the game. This bug prevented a player from making a critical jump from one platform to the other - Rastan would always fall short of the intended point and could never make it across. The ZX Spectrum version was awarded 9/10 in the July 1988 issue of Your Sinclair and was placed at number 54 in the Your Sinclair's Top 100 list. Taito exported the C64 version to the United States in 1990, releasing it alongside two additional versions for the IBM PC and Apple IIGS. The Apple IIGS version is notable for having graphics and play mechanics closer to the arcade game than any other home computer version.
In 1988, Taito also released their own conversions of Rastan for the MSX2 in Japan and the Master System in North America and Europe (both versions featured redesigned level layouts, with the Master System version replacing some of the boss characters as well). The Master System version was later ported to the Game Gear and released exclusively in Japan on August 9, 1991.
An emulation of the Rastan arcade game is included in Taito Legends Vol. 1, released for the PlayStation 2, Xbox and Windows PC in 2006.