Super Mario 41997

Super Mario 14 is a hack of the Japan-exclusive Famicom title Kaiketsu Yanchamaru 3: Taiketsu! Zouringen, the second follow-up to Kid Niki: Radical Ninja.

Sonic the Hedgehog (also know as Sonic 4) is an unlicensed game for the SNES by Peruvian scene organization Twin Eagles Group. It is, actually, a hack of Speedy Gonzales: Los Gatos Bandidos. Notable features include Sonic's new ability to kick, and missions to free Mario from cages (upon which the latter exclaims his name).

Layla: The Iris Missions is a complete overhaul of the Famicom game Layla. It features all-new levels, altered graphics, an original and much-expanded soundtrack, and many tweaks to game mechanics, with the goal of creating a more modern game experience without compromising the core grabbing-cake-and-ice-cream-on-roller-skates gameplay.

Mario has been arrested for a crime he didn't commit! Can you break out, and uncover a conspiracy along the way?

Sonic 2 XL is a hack of Sonic the Hedgehog 2 for the Sega Mega Drive by Captain Bozo and Ranger. Rings are replaced with onion rings, and Sonic becomes fatter after eating them.

A bootleg version of a NES game Code Name: Viper.

Mario's Keep is a ROM hack/mod of Super Mario Bros. (NES). The game is a puzzle/maze, in which the player needs to find the floors and save the princess.

Super Mario Bros.: Two Players Hack is a ROM hack/mod of Super Mario Bros. which adds two players simultaneous gameplay to the original game.