64-bit Windows builds, Sandbox improvements and many smaller changes

New mountable games, HUD improvements, content fixes, networking improvements and optimizations.

A small update fixing some regressions of the November Update.

New water visuals, NPC improvements, and more!

New game assets, and many, many other improvements.

Stability/security patch

A small patch

Shaders, new content and many other improvements.

Optimizations, Half-Life 2 animation fixes, and more.