Mods like Portal: Revolution & Portal Reloaded add new stories, characters, and mechanics, enhancing the Portal 2 experience. Portal Stories: Mel offers a standalone mod with a fully voiced story, 22 ...

Modders can now use RTX Remix to add GPU-driven path-traced particle effects, first demonstrated using Portal With RTX.

A Portal 2 mod "in development for several years" plans to overhaul the adventure game's graphics to make Aperture Science look as good as Valve Software's most recent game Half-Life: Alyx made City ...