St. Dragon (full name Tenseiryuu Saint Dragon) is a sci-fi side-scrolling shooter initially released as an arcade by Jaleco in 1989.
Storm Entertainment handled the conversions to Amiga, Commodore 64, ZX Spectrum, and Atari ST. Storm did an excellent job with the ZX Spectrum version, released in 1990. Then, they asked Random Access to develop the Amiga version.
Saint Dragon is a classic shooter inspired by R-Type. It features huge sprites, lots of enemies, and several weapons. If the arcade was not so popular, some conversions, especially the ZX Spectrum and the Amiga ones, were absolute gems. The developer of the Amiga version, John Croudy, did a fantastic job. Many enemies and objects are on the screen, with no speed problems.
The game is swift (and challenging) and doesn't need to stop loading because all the assets are continuously loaded during the gameplay. This iconic shooter is a remarkable achievement that you need to try.