Ultima 1 Remade & Reborn
sheetsda writes "A company called Peroxide Entertainment(a freeware company) is remaking Ultima 1 under the title Ultima 1 - A Legend is Reborn. They're using their own engine, 'featuring most of the goodies you'd expect of a modern commercial 3d engine in the market' and recycling the overall plot but adding details."
Fans of the ultima series might want to check out Exult which will allow you to play Ultima 7, Ultima 7 II, and their add ons without using a speed limiter in DOS.
It's still development, but you can apparently paly Ultima 7, and it's expansion "Forge of Virtue" in their entirety, and most of Ultima 7 II is playable.
It does require you to have the actual game, so it's not a complete game itself, just a re-written engine.