If you thought a Spartan was out of place in Dead or Alive 4, your head just might explode when you see one in The Elder Scrolls IV: Oblivion. Entitled the "Spartan Project," this Oblivion mod adds a brand new Halo themed mission to the game. The story actually borrows from Bungie's official explanation for a Spartan in DOA4. A ship from the future gets caught in a timespace rift, and crash lands in Oblivion's timespace. As the hero, you find a broken energy sword, take it to the local (mad) scientist, and he asks you to investigate further. After all is said and done, you wind up with the energy sword, Mjolnir armor, and even a Covenant plasma shield. All in all it sounds pretty cool. Unfortunately, this mod is PC only. Check out a video after the break.
The only thing missing is the terrifying sound the sword makes when it powers up. Hit the read link for more pictures and a detailed explanation of the mod.