Abadox (アバドックス, Abadokkusu?) is a video game for the NES, subtitled The Deadly Inner War. It is a side-scrolling shoot 'em up in the vein of Gradius and R-Type. The game is notable for its unique visual design, as the game takes place inside the intestinal tract of a giant alien organism. Abadox is also known to be difficult, since it takes one hit from an enemy projectile to be killed .[citation needed] In Abadox, if a player is killed, one must restart from a checkpoint passed before death.

Action 52 is the name of two unlicensed multicart video game compilations released by Active Enterprises. Each of the two cartridges consist of 52 individual and original video games. The first was released in September 1991 for the Nintendo Entertainment System video game console, with a second released in May 1993 for the Sega Genesis (a Super Nintendo Entertainment System version was advertised in some magazines, but never released). It initially retailed for the comparatively high price of US$199 (or "less than $4 for each game"), and became notorious among gamers for the abysmal quality and functionality of its games. Many video game collectors value Action 52 for its notoriety and rarity. The boxes state that the cartridges contain "52 'new and original' exciting games". The games cover a variety of genres, although the most common are scrolling shooters and platform games. Among the games is The Cheetahmen, Active's attempt at creating a franchise similar to the Teenage Mutant Ninja Turtles.

Hudson's Adventure Island (高橋名人の冒険島 Takahashi Meijin no Bōken Jima?, "Master Takahashi's Adventure Island"), also known simply as Adventure Island, is a side-scrolling platform game produced by Hudson Soft that was first released in Japan for the Famicom and MSX on September 12, 1986. It was later released in North America for the Nintendo Entertainment System on September 1988 and in the PAL region in 1992 under the title of Adventure Island Classic. Adventure Island is an adaptation of the arcade game Wonder Boy, originally published by Sega for developer Escape (now known as Westone Bit Entertainment). Adventure Island was followed by a series of sequels that were independently developed by Hudson Soft.