Space Invaders DX

Space Invaders DX contains an updated version of the original Space Invaders alongside several other additional features. As in the original, the player controls a laser base situated at the bottom of the screen, who must destroy each formation of invaders before they successfully take over Earth. Formations march towards the bottom by moving to the side of the screen and then downward. The laser base can only fire one shot at a time, and must wait before it either collides with an enemy or goes off the screen.

The invaders become faster as more are destroyed. Four shields are placed above the player, who can hide behind them for protection from enemy fire; however, the shields become damaged when inflicted with fire from either the invaders or the player. A UFO will occasionally appear towards the top of the screen, which can be shot down for bonus points.

Taito released Space Invaders DX in September 1993 to commemorate the 15th anniversary of the Space Invaders series. Early versions of the game were designed to run on the company's B System arcade system board, with later ones using its cartridge-based F3 System. The game was produced by Keisuke Kasigawa and composed by Katsuhisa Ishikawa, credited as “Babi” in-game. Space Invaders creator Tomohiro Nishikado is also credited for the port of the original.

DX was ported to the Super Famicom on March 25, 1994, to celebrate Taito's 40th anniversary, which renamed it Space Invaders: The Original Game. A Game Boy port of the original game, simply titled Space Invaders, was also released in North America and Europe in 1994; this version features the DX game as a hidden extra, accessible by inserting the cartridge into the Super Game Boy peripheral for the Super NES.

The Super Famicom version of Space Invaders DX in particular was met with a polarizing reception at its release and retrospectively, with common complaints being towards its lack of content and any addition of a remade version of the game. Several liked the game's multiplayer mode and visual options, alongside for it being a good version of the game overall.

German publication Mega Play unfavorably compared the PC Engine CD version to Galaga '88 and the previously released Space Invaders: Fukkatsu no Hi, critical of its gameplay and lack of features. Mega Play did applaud the multiplayer mode and quality of the conversion, highly recommending it to fans of the series. Nintendo Power felt relatively the same, claiming fans of the original would appreciate the quality of the package itself and its multiplayer features, while also saying those who didn't have much experience with the series would dislike its overall repetitive gameplay and lack of content. Famitsu magazine disliked the Sega Saturn version for lacking any updated version of the original aside from its multiplayer and "Kawaii" modes, both of which they liked for their uniqueness.