These games had humble beginnings, first as mere Half-Life mods, but have since grown into massive phenomena.

While performance mods are fantastic, some of the most exciting mods are those that overhaul Fallout: New Vegas entirely and make it feel new.

We had to start with Fallout: London – the recent release of one of the biggest mods ever had us reinstalling Fallout 4 immediately, and this thing barely qualifies as a mod. While it’s using the same ...