Unfair Mario, a fan game made with bad intentions and blatantly inspired by the Japanese Cat Mario game, does not have much of an interesting...
Graphically, it is inspired by the games of the Italian-American plumber, but it doesn't have much of interest.
The gameplay is a simple platformer with hidden trolls, which manage to make the unsuspecting player alter, but then you just have to get used to it and it's quite simple, it has the same flaws as Cat Mario.
The soundtrack is from the original game, quietly stolen, but it fits being a fan game.
In short as a game itself it succeeds in its intent but remains mediocre.