Half-Life 2 mod unlocks official but unused beta levels for Valve FPS

A new Half-Life 2 mod unlocks dozens of official but never-used levels from the beta version of Valve’s iconic FPS, something to see as we wait on Half-Life 3

so they stopped working on L4D3 just cause they didn't FEEL like

Building a Popular Half-Life Mod During the Rise of Counter-Strike

Game Mod - TV Tropes

Well-regarded Half-Life 2 VR mod adds support for Episode One

Use These Cheats for a Leg up in Half-Life 2

Building a Popular Half-Life Mod During the Rise of Counter-Strike

Building a Popular Half-Life Mod During the Rise of Counter-Strike

ATM-3/changelogs_detail/changelog_atm3_5.10.0_full.txt at master

Half-Life 2 remake, based on Valve's abandoned beta, gets new chapter

Version History, Unturned Bunker Wiki

Half-Life: Blue Shift (PS2) (unofficial port) : Gearbox Software

Editorial Polygons and Pixels