Tom and Jerry 3
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A Bug's Life is a bootleg Mega Drive port of the game with the same name for the Game Boy Color published by Unite Lucky Technology in 2000. It was also then ported to the SNES in the same year and was published by DVS Electronic Co.
Crash Bandicoot is a Famicom platformer developed and published by Nice Code Software. It was released on an unknown date likely from 2007 or later.
Donkey Kong 5: The Journey of Over Time and Space is a bootleg game for the Game Boy Color. It is a clone of Super Mario Bros. Deluxe, also released for the Game Boy Color (but it is not a hack).
Amusement Park: Jumping Kid is an unlicensed platforming game for the NES.
AV Bishoujo Senshi Girl Fighting is a fighting game running on the Street Fighter II engine. It reuses a lot of resources from Street Fighter IV and Kart Fighter with some Master Fighter II stuff mixed in and most of the girls are based off of characters from Ranma 1/2 Chounai Gekitou-hen and Bishoujo Senshi Sailor Moon Fighting. Chun-Li in the game is from Street Fighter II: The World Warrior and Marry is Bunny from Street Fighter IV. You are awarded with hentai every time you beat a round when the difficulty is on 3, 4 or 5. These are backported from various PC98 H-games, such as Ten Sen Nyan Nyan.
Titenic is a Famicom beat-em-up based off of the 1997 film Titanic by ex-Hummer Team members. This game was hacked to create the more well-known Harry's Legend. The game was most probably first known to be on an ABAB 3-in-1 multicart and was later found on a 15-in-1 separated into two separate games.
Rocman X (洛克人X) (also known as Thunder Blast Man) is an unlicensed game created by Sachen, released on the Famicom and NES sometime in the 90's and also sometime later for the Game Boy Color. The NES and English Game Boy Color versions were released as Thunder Blast Man, the Chinese version of the GBC game released as 洛克人X金 (Rockman X Gold), and one of the NES versions' label calls it Thunder Blaster Man.
Super Donkey Kong 3 is a Game Boy game based on Donkey Kong Country 3. It was created by Makon Soft at an unknown date.
Felix the Cat is an unlicensed platform game developed and published by Dragon Co. in 1998. It is unrelated to Hudson Soft's official Felix the Cat title, released in 1992, but the gameplay of the two games is very similar.
Super Mario DX is an unlicensed game for the Game Boy Advance. It was developed by Sintax and uses the same engine as Sintax's other GBA platformers.