Garry's Mod 26 Update Patch Notes (29th April 2026)
Garry's Mod's April 2026 update brings two new mountable games, a HUD overhaul, and significant networking changes that should cut server join times.
Two new games just joined Garry's Mod's mountable library: Black Mesa and Military Conflict: Vietnam are both now supported, with the blessing of their respective developers. Own either on Steam and you can pull their maps and models straight into Sandbox. For a sandbox game that's been running on community goodwill for over a decade, that kind of active expansion still impresses me.
The April 2026 update also touches the default HUD in ways that actually matter. Ammo now displays correctly for modded weapons using secondary clips, the weapon selector scrolls when you've got more equipped than the screen can fit, and 4K scaling no longer causes HUD elements to pile on top of each other. Small fixes, but the kind that have probably annoyed players for years. The Combine APC is also now a built-in driveable vehicle in the spawnmenu, no addon required.
Under the hood, the networking stack has been reworked to enable faster transfer speeds, cut unnecessary entity data, and switch several systems to double precision time. In practice that means shorter server join times and servers that can run longer on the same map without degrading. Facepunch has the full breakdown on their blog.
Here's everything that changed.
Full Patch Notes
New mountable games
With community effort and permission from the respective game developers, 2 new games are now available to be mounted in Garry's Mod: Black Mesa and Military Conflict: Vietnam!
As with other mountable games, you will need to own them on Steam first, which will enable players to use maps and models from these games in Sandbox and other gamemodes.
HUD Improvements
Some default HUD elements received some polish - the weapon selector, damage indicators, health and ammo displays.
The ammo HUD now correctly displays ammo for certain modded weapon types that use secondary clips, the default weapon selector can now display more slots and scroll weapon selection when there are too many weapons equipped to fit on the screen.
The HUD now also scales better at 4K resolution, preventing certain elements such as Sandbox notifications and voice chat from overlapping the ammo HUD.
New content & content fixes
The Combine APC is now a built-in vehicle, right in the spawnmenu, fully driveable by the player.
There are also numerous bug fixes to existing models for various issues such as props becoming pitch black when resting on ground, fire effects not displaying correctly and spawning wrong gib models when broken.
Network protocol changes
This update brings significant under-the-hood changes to the game's networking, enabling faster network transfer speeds to reduce server join times, and removing a whole host of unnecessary networking done by various entities, hopefully reducing overall bandwidth usage, especially on initial player spawn.
This update also switches many game systems to use double precision time, which should help servers to not need to restart or change maps as often and improve overall game feel after playing for a while on the same map.
Smaller stuff
As usual this update also brings a huge amount of fixes and other smaller changes. Some optimizations to performance and memory usage as well.
You can find the full change list for this update in our blog post:
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Written by
Nathan LeesGaming journalist and founder of XP Gained. Covering patch notes, breaking news, and updates across 160+ games.
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