Wizardry 8 is a first-person party-based dungeon-crawling three-dimensional open-world role-playing game. Released in 2001 as the final entry in the long-running Wizardry series (which began in 1981 as one of the very first computer-RPGs), Wizardry 8 completes the "Dark Savant" trilogy that began with Wizardry 6, throughout which you're trying to stop an evil villain known as the Dark Savant from gaining access to the Cosmic Forge -- the tools used by the gods to create the universe, which hold the power to create, destroy, or change anything in the universe by simply writing its history into existence. Despite being a continuation of the story from the previous two games (your save files can be carried through all three games), Wizardry 8 works fine as a stand-alone title, although you'll miss a lot of references and it might take you a little longer to understand the backstory.
As part of a game series borne of the 1980s, Wizardry 8 definitely has that vintage, old-school vibe to it, but with the advantage of a much more modern skin which makes it a much easier game to get into. That's absolutely crucial, because this is a truly great RPG that easily ranks among the best RPGs ever made. It's not perfect, mind you -- there's one crucial problem that made me almost want to quit, and it's a little rough around the edges due to developer SirTech's dwindling budget -- but it's got one of the most robust party-creation systems ever implemented in a video game, and one of the best turn-based combat systems of any RPG. Not to mention a fairly sizable open-world with an interesting blend of fantasy and science-fiction elements, and a non-linear main-quest-line that allows for a lot of rewarding exploration and discovery.