Ultima 5: Lazarus is a complete remake of the Ultima 5 game using the Dungeon Seige game. Recently, they released their first Alpha version of the mod. If you like Ultima 5 or are a fan of Dungeon Seige, you need to check out this mod. It looks like it has the potential to be a great game.

The official site can be found here: http://www.u5lazarus.com/ along with a lot of information on Ultima 5 and some incredible screenshots.