31 Dec 1990
31 Dec 1990 - Amiga
31 Dec 1990 - Atari ST/STE
31 Dec 1990 - ZX Spectrum
NOTE: "Darius+" is the Amiga, Atart ST, and ZX Spectrum port of the original Darius published by The Edge and developed by Softek. This is a different port than the title "Darius Plus", which was produced by Bits Laboratory and NEC Avenue for the TurboGrafx-16 PC-Engine. Three PC Engine ports were produced by NEC Avenue for the Japanese market in 1990, titled "Super Darius" on March 16, "Darius Plus" on September 21 and the only commercially-released HuCard that has enhanced support for the PC Engine SuperGrafx, and the limited promotional title of "Darius Alpha (α)". All three PC Engine versions were developed by Bits Laboratory. During the same year, a home computer version of the game titled "Darius+" (unrelated to the similarly-titled PC Engine port) was published by The Edge and developed by Softek for the Amiga, Atari ST and ZX Spectrum in Europe.
Darius, Year 201. Invasion! The vicious Belsar have attacked the peaceful Darius system, which now faces absolute devastation at their abominable hands! Darius' defense fighters proved no match for the overwhelming firepower of the alien forces, which wiped out their entire fleet in one fell swoop! With nothing left to protect them, the people could only sit and wait for the icy embrace of death as the satellite bombardments continued unopposed. The scent of despair hung thickly in the air, all hope of survival having been quashed. But then, from out of the darkness of the mourning clouds came a single bright light in the sky. "Silverhawk........." Like a phoenix brought forth from the embers of a burning world, the bird shaped visage became a beacon of the planet's last fight for survival! Perhaps the end is not as nigh as it first appeared.