Where there is software there is often piracy and the NES/Famicom was no exception. Although the NES and Famicom has been dead for many years now there are still pirate outfits that continue to produce games. Including new games that are not just hacks of old ones, these are known as HK (Hong Kong) originals.
 

PIRATE FAMICOM GAMES

4 in 1
Contains Mario Bros, Battle City, Exerion and Kung Fu.
4 in 1 Superstar Edition
Boogerman, Lion King, Mortal Kombat 3 and Earthworm Jim 2.
Aladdin Return of Jafar
Astyanax with hacked title screen and sprites.
Aladdin 2
Yet another bloody Aladdin port.
Donkey Kong 2 (Country)
Port of the Super Famicom game.
Earthworm Jim 2
Another port of the Super Famicom game, this one is slightly better.
Earthworm Jim 3
A fairly recent HK original port circa 1997.
Fatal Fury 3
Port of the Neo Geo game, 2 or 3 who knows?.
Mickey Mania 7
HK original platformer based on Mickey Mouse.
Pocahontas 2
Port of the Sega Genesis (Mega Drive) game.
Power Rangers
HK original or a hack?.
Street Blaster V Turbo
A very bad Street Fighter 2 Turbo port.
Street Fighter 2
Port of the Arcade game Street Fighter 2 World Warrior game.
Super 4 in 1
Four Super Mario games in 1, all hacks.
Super 66 in 1 Special!! 16 Megabyte
Multi cart that contains 66 different games.
Super Hik 5000 in 1
Multi cart that includes Power Rangers and Mortal Kombat.
Super Bros. 6
A Super Mario hack of the game Tiny Toons Adventure.
Time Diver : Avenger
Unreleased NES game found years later on bootleg Famicom carts.
Wario Land 2
Kirby's Adventure hack with the title screen from Wario's Woods.

SCREEN SHOTS

Aladdin 2 - (Aladdin 2)
Boogerman - (4 in 1 Superstar Edition)
Earthworm Jim 2 - (4 in 1 Superstar Edition)
Earthworm Jim 2 - (Earthworm Jim 2 by Shin Shin Electronics)
Earthworm Jim 3 - (Super Earthworm Jim 3 1997)
Fatal Fury Special - (5 in 1 Golden)
Mickey Mania 7 - (Mickey Mania)
Mortal Kombat 3 - (4 in 1 Superstar Edition)
Pocahontas - (Super Pocahontas 2)
Power Rangers - (Power Rangers by Angel)
Sonic 5 - (Super 6 in 1)
Super Aladdin - (5 in 1 Golden)
The Lion King - (4 in 1 Superstar Edition)
Time Diver : Avenger - (Time Diver : Avenger by Nitra)

MORE PIRATE FAMICOM GAMES (CART SCANS)

2 in 1 - Batman and Spiderman (not Jungle Book as the label states).
3 in 1 - Super Aladdin, Spiderman and Tom & Jerry.
5 in 1 - Batman, Soccer, Robocop 3, Tiny Toons and Basketball.
5 in 1 - Silk Worm, Contra Force, Earthworm Jim 2, Aladdin and Fatal Fury.
6 in 1 - Furrari, Sonic 5, Lion King, Golden Axe, Race America and Batman.
35 in 1 - Duck Hunt, Clay Shoot, Hogan's Alley, Wild Gunman and Tank.
Bart Vs The Space Mutants - Bootleg Bart Vs The Spacemutants cartridge.
Crisis Force - Bootleg Crisis Force cartridge.
Jurassic Park : Lost World - Jurassic Park hack.
Rad Gravity - Bootleg Rad Gravity cartridge.
Super Donkey Kong 3 - Donkey Kong 3 hack.
Super Ferrari Colour 2001 - Ferrari Grand Prix Challenge hack.
Super Mario Bros. 2 - Port of the FDS version (Lost Levels).
Super Mario 6 - Tiny Toons hack with hacked title screen and sprites.

PIRATE NES GAMES

Aladdin 2
One of the better versions of Aladdin by Konami?. :)
Super Mario Bros
Supervision cartridge made in Asia.

Teenage Mutant Ninja Turtles (Turtle-Ninja)
Video Odean cartridge made in Japan.
Teenage Mutant Ninja Turtles 2/3
Hi-Q Spica cartridge made in Asia.