Donkey Kong 5: The Journey of Over Time and Space, 2003 Digitmon Sapphire, and Harry Boy are bootleg games made by Sintax for the Game Boy Color and were released around 2001-2003. The reason why these games are in one article is because they are reskins of each other.
Music stolen from Pokemon Pinball (e.g the settings and Blue Field theme).
Stolen sprites (e.g. some Brick Block equivalents are the broken versions of the breakable blocks from Wario Land, the Koopa Troopa equivalents are blue armadillos from the Tiny Toon Adventures game, the Hammer Bros. are the Hockey Ducks from DuckTales, the Title Screen is stolen from Donkey Kong '94, Donkey Kong and Diddy Kong’s sprite are stolen from Donkey Kong Country for Game Boy Color, and the spin sprite is stolen from Taz-Mania).
The Brick Block equivalents are literally unbreakable.
Some enemies function horribly different.
Broken English and horrible grammar.
A lot of things in the games don't make any sense, like how can Donkey Kong become Diddy Kong when he doesn't have enough food?
What's even worse is that Sintax thought it was a good idea to attempt to leech off Super Mario Sunshine by re-releasing Donkey Kong 5: The Journey of Over Time and Space as the same name but with an extra "r" in "Mario". The only differences are that the title screen is different and so how the goal pole functions; if you touch it anywhere other than the very bottom, you will get an instant game over.