505 Games announced that it will be publishing OtherSide Entertainment's Underworld Ascendant. The Kickstarter-funded game, announced in 2014, is currently planned for release on PC, Mac, and Linux in the second half of 2018.

Underworld Ascendant is a revival of the Underworld series, a spin-off of the Ultima series that includes 1993's Ultima Underworld: The Stygian Abyss and 1994's Ultima Underworld II: Labyrinth of Worlds. A sequel to those titles, Underworld Ascendant follows the Avatar as he returns to the Stygian Abyss.