Neotokyo is an absolute PC gaming classic, a (somehow) free mod for Half-Life 2 that remains one of the prettiest and coolest multiplayer shooters on the planet. And now, 12 years after its first release, it has a singleplayer experience for fans to play through.
Source: Kotaku – Classic Half-Life 2 Mod Neotokyo Gets A Singleplayer Spinoff