It's just not the same without the urine palette.
Anyway, I think that's the Gameboy version of John Romero's Daikatana, which I've heard is a lot better than the original game.
This is correct. Daikatana, reimagined as a Zelda-clone for the Gameboy Color. That picture is only black & white because it's a flashback at the beginning of the game. (See the first attached picture for a more "normal" screen)
It is indeed a much more solidly made game than the original and quite fun.
I actually used the emulator "bgb", which comes with a variety of different color palettes for monochrome Gameboy titles, a lot of which try to evoke the genuine GB feeling (see the other two pictures for examples).
Anyway, it's your turn now.