Oh man, Arcanum deserves far better than a single link and no description.
Arcanum's one of my favorite RPGs ever. It's a fallout-style isometric RPG set in a Victorian steampunk matchup of Magic and Technology, which actively cancel each other out. It's Airships and trains, ladies with giant hoop dresses and parasols, and silent movies, mixed with elves, orc air raiders and knights, wizards and dwarven alchemists. The matchup makes it an incredibly unique world, nothing like it's come out since.
This'll be my 4th time buying the game, bought it when it came out, replaced it a few times over the years and now I won't have to worry about CDs.