The Perfect Dark PC port has been receiving steady improvements, including HD texture support and an ambitious all-in-one pack that combines over 70 arenas into a single download. Community efforts like Perfect Dark Forever v0.7.d, which bundles more than 2300 HD textures, make it super easy to give the game a fresh new look.
Another highlight is the experimental All-in-One Mod, which merges several multiplayer mods into one package and currently offers 71 playable arenas. It gives players plenty of variety to keep multiplayer matches feeling fresh.
With ongoing contributions from community members such as Ryan Dwyer, fgsfdsfgs, Wreck, and Atari-Dude, Perfect Dark continues to evolve far beyond its original N64 release.
More info on the mods here.