Rockman X42000

Super Contra X is a pirate based off the Contra series, created by Chengdu Tai Jing Da Dong Computer Co sometime in the 1990's (likely in 1994).

Homebrew version of Mega Man 2 for TurboGrafx 16/PC Engine

Released in 1997 on Family Computer, by Super Game.

A bootleg game based on the Mega Man World series mixed with some traits from the Mega Man X series, developed for the Game Boy Color. Made by a company called "Vast Fame". The Rockman DX6 and Rockman DX6 title hacks were done by "Li Cheng".

Released in 1999 on Game Boy, by Makon Soft.

Earthworm Jim 2 (蚯蚓吉姆2) is an unlicensed port of the game of the same name, made for the Famicom by a team of (or at least related to) Ex-Sachen developers and published by Ka Sheng in 1996.

Released on Sega Mega Drive/Genesis, by Gamtec.

A Super Metroid ROM hack