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U21 Experimental Branch is LIVE

Hell Let Loose · Community Announcements · September 04, 2026

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Hello everyone,

The Update 21 Experimental Branch Playtest is LIVE NOW on Steam!

[p align="start"]Jump in and test the latest additions and changes coming in Update 21, including:

[p align="start"]➡️ To join, head to Hell Let Loose > Properties > Betas on Steam and select Exp_Branch.

[p align="start"]Please submit your feedback here:

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Read the full breakdown of everything coming in Update 21: 🔗 Blog - Dev Brief #220 | What's Coming Next? | Hell Let Loose | Hell Let Loose

Weapons

[p align="start"]This experimental branch will include 5 new weapons:

[p align="start"]For the purposes of this Experimental branch, all of the above weapons will be unlocked by default for all players to try. Come release they will be locked behind their respective loadout levels.

Rifle Grenades

[p align="start"]As mentioned above, this update is adding Rifle Grenades, a new weapon type. They are unique in that they can swap between being used as a regular infantry weapon and a grenade launcher. Players can hold the fire select button (CAPS lock on keyboard, right d-pad on controller) to open up a radial wheel listing all available grenade types or simply tap the button to quick swap to their most recently selected grenade. Note that swapping will take some time to complete depending on if the weapon has been fired or not.

[p align="start"]The exact number of grenades available will vary depending on the role using it. The available grenades are:

[p align="start"]Historically some of the grenades used would have had timed fuses, but for gameplay reasons, all of them will act as impact grenades.

Fire Selector

[p align="start"]All weapons that historically featured fire select modes have now had that functionality implemented. You can now freely toggle fire modes on the following weapons

[p align="start"]Fire modes can currently be toggled by pressing Caps lock on keyboard

Loadout Changes

[p align="start"]All factions with Rifle Grenades have received the following loadouts

Rifleman

[p align="start"]Level 8 loadout with a Rifle Grenade with 4 Frag and 2 Smoke Grenades

Medic

[p align="start"]Level 6 loadout with a Rifle Grenade with 6 smoke Grenades

Engineer

[p align="start"]Level 8 loadout with a Rifle Grenade with 3 AT, 2 Frag and 1 Smoke Grenade

[p align="start"]On top of these, there have been several other loadout additions and alterations:

US Rifleman

US Tank Commander

Default Crewman

Technician Wrench

US Anti-tank

US Operator

Armour Changes

SPAS

[p align="start"]All SPA gunner seats now have a single additional zoom level. On top of this the default SPA that spawns in each team’s HQ will now auto respawn once destroyed, similar most non heavy tanks. The time for this to happen is currently 7 minutes and 30 seconds.

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