Super Mario 4

Super Mario 4 (also known as Super Mario Land 4) is an unlicensed bootleg game, which is a hack of the Game Boy game Crayon Shin-Chan 4, originally by Bandai. The hack changes a large amount of content. The level design is completely different and is the main subject of the game's criticism due to the borderline unfair increase in difficulty when compared to Crayon Shin-Chan 4. The game has four levels, and each of them is incredibly lengthy.