Another hack of Pokémon Ruby, released by the author as a patch file intended to be played by VBA users who already owned the Ruby cartridge and had a copy of its ROM image. The game has a great number of spelling and grammatical errors, which result from the hack being translated from Spanish, although the grammar improves throughout the game. The game also contains profanity and adult themes, which are absent from all official Pokémon games. Pokémon Quartz replaced all names and graphics of traditional Pokémon with new, made-up Pokémon, although some of the changes were only cosmetic and did not change learnsets or types. The game takes place in a region known as "Corna", a heavily edited version of Hoenn, and requires the player to navigate a very different series of paths during gameplay. It also been published in cartridge form and sold as a bootleg game.
While the best-known bootleg cartridge as played on the actual GBA contains serious glitches and errors, the current patch file release works well with VBA when the patch is applied to a clean image of an actual Ruby cartridge.
Zorak of Something Awful did a complete Let's Play playthrough of the game, which ended in an interview with the creator of the hack.
A sequel to the game, Pokémon Marble, is in its beta release. This version is a hack of FireRed and has vastly improved grammar and spelling.