One of the PROMs on its PCB says 'JY215'. 3 Mario sprite and the credits being edited out with X's.

These 3 games share similar traits, like the Dian Shi Ma Li Mario sprite, the Super Mario Bros.

Even though the 'developer' behind this hack is unknown, it might be the same creator who did Mario Fighter 3 (a hack of Hummer Team's version of Street Fighter II: The World Warrior) and Mario IV (a hack of Armadillo).

Meanwhile, during gameplay, Up+Start refills the health meter by three hearts, something that is mentioned on the cart's label. There are two cheats hacked into the game: Pressing Select on the title screen mixes up the stage order up until the castle level (identified by the number next to the 1992 copyright year) dying once reverts said stage order back to normal. The end credits have been edited out, replacing the names with just X's. The head on Fred Flintstone's sprites was replaced with Mario's, even though Fred's graphics anywhere else remain unchanged (including being intact in the Basketball minigame), just like his name on the HUD. 7 Grand Dad modifies the title screen, namely by changing up the logo.

Download flintstones nes game