New Rubis Shadow " is likely a community-made ROM hack or fan project based on Pokémon Ruby

The central pillar of this theoretical version is the concept of "Shadow." In the Pokémon canon, Shadow Pokémon were introduced in the GameCube titles ( Colosseum and XD: Gale of Darkness ) as creatures whose hearts had been artificially closed. In a "Shadow Ruby" scenario, the antagonists—Team Magma—would not merely be seeking to expand the landmass for human progress. Instead, driven by a corrupted ideology, they would utilize Shadow technology to incinerate the oceans, leaving behind a scorched, hollow world. The "Shadow" element transforms the vibrant Hoenn region into a place of moral ambiguity. The legendary Groudon would exist not as a primal beast of nature, but as a Shadow entity, radiating a heat that burns not just physically, but spiritually.

The current theory-crafted meta for New Rubis :