Pokemon Altair & Sirius

Pokemon Altair & Sirius

Download Pokemon Altair and Sirius GBA Roms (Pre-Patched)

Pokemon Altair and Sirius is a GBA Rom Hack made by Pokemon Vega Team which is based on Pokemon Emerald. It is now available to download and was last updated on December 9, 2020.

  • Creator: Pokemon Vega Team (anonymous)
  • Version: 4th September 2020 update
  • Hack of: Emerald
  • Updated: December 9, 2020


Pokemon Altair and Sirius – Three years ago, shortly after Champion Brendan’s crowning and subsequent retirement, Hoenn was hit by a meteor shower. The Hoenn Catastrophe drastically altered the terrain of Hoenn, changing much of the southern end into a barren wasteland and destroying the Battle Frontier, among other things. This had a huge influence on animals, leading to the extinction of many species. Surprisingly, new Meteoric Pokémon species began to appear all over the place. Three highly powerful and wicked Pokemon stood out…

Professor Birch assigns you to complete the Pokédex in order to document all of the new species when you arrive in Littleroot Town. April (or Gordon), Birch’s niece (or nephew), and Billy, the younger brother of the current League Champion, Wally, are introduced to you. Romero, the Petalburg Gym Leader, also has a younger brother who frequently crosses your way. Mosmero is his name, and he’s an oddball. Despite his age, he tours the region playing various pranks.

(Because the game’s progression mostly follows Ruby/Sapphire/Emerald, many details will be omitted for brevity.)


  • A fully new region, the Tohoak region!
  • 181 new Pokemon, plus 56 Pokemon from newer generations!
  • 70 new moves, plus 87 moves from newer generations!
  • Impressive custom music! (Full OST download here: http://www.mediafire.com/file/ge6slgc2i4rwrlv/Pok%C3%A9mon+Vega+OST.zip)
  • Rematches with almost all important trainers!
  • An extensive postgame, including a battle facility!
  • And much more!

Useful Stuff

Check out Pokemon Adventure Gold Chapter!




You can download the Pokemon Altair & Sirius GBA ROM from this page and you can download an Emulator for your device from this link to play the game.