An ambitious new mod recreates the entirety of Baldur's Gate in the Neverwinter Nights 2 engine.
Baldur's Gate. Everytime you mention it, someone reinstalls it. Or is that Deus Ex? Regardless, prepare your party's marching order for a walk down memory lane yet again, this time in glorious 3D. If Beamdog's Enhanced Edition didn't seem nearly enhanced enough for you, there's now the fan-made Baldur's Gate: Reloaded. Built entirely in the pliable Neverwinter Nights 2 engine, this mod doesn't just recreate the original 60 hour campaign, but the entire Sword Coast expansion pack as well.
To run Baldur's Gate Reloaded, you'll need a copy of Neverwinter Nights 2, along with the Mask of the Betrayer and Storm of Zehir expansions. The platinum pack over at GOG works nicely. While the mod doesn't require that you own a copy of the original Baldur's gate, you can play nice and pick up a copy from GOG as well. Once that's installed, you can download the mod from the Neverwinter Nexus.
While Baldur's Gate might not be the easiest game to get into (you can thank the archaic 2ed ADnD rules for that), it made waves that we still feel today. It established Bioware as an RPG titan and created a market for RPGs rich with dialog and characters. I've never been so happy about triggering my Nashkel Mines-induced PTSD.