This hack is based on the North American version of Gun Nac. Level select is unlocked by default. Space War III automatically skips the intro cutscene. Star Wars is unrelated to the well-known franchise of the same name, and was likely changed to Space War later on for copyright reasons. the music in these hacks are intact but some of the sound channels are removed.
Dark Seed (黑暗之蛊) is an unlicensed port of the DOS and Amiga game of the same name, made by Mars Production and published by Yancheng around 2001 or 2002.
Huge Insect is one of Sachen's rarest unlicensed games for the NES, originally developed by Thin Chen Enterprise in 1993 and listed in Sachen's catalog but never actually produced until a limited run of circa 30 copies in 2001.
Sekiryuuou is a text adventure game developed by Tokai Engineering for the Famicom, and published in Japan by Sunsoft. It is based on a Japanese manga set during a historical Chinese civil war. The player controls a protagonist via a series of menus in order to solve a series of puzzles.
The game, and the manga it is based on, depict a period of ancient Chinese history between the Qin and Han dynasties, a few decades before the Three Kingdoms era began. As expected of a transitional period, there was plenty of intrigue and conflict leading up to the change of power that future novels and mangas could draw from.
A game where the player controls a police car and has to catch the thief by running their car into the thief's car. It is not possible for the player's car to go backwards when driving. The game features no music or sound effects.