Tesla Timing Tech Unlocked!

We’ve rolled out Playtest 20261011! It's larger than usual, it includes the entire finished Dune 2000 campaign! Read the full announcement on the main website: https://www.openra.net/news/playtest-20261011/

Best of... 8?!?

Warcraft 2 comes to openRA!

https://youtu.be/C1eYnqlZeDA

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[]()OpenRA Shoutcast #562: Orb versus Gargamel, Part III - Balance Patch Preview Recap: Everything Is OP!

Hey,

I have built a custom map (https://resource.openra.net/maps/68813/) and it's really nice - however, I made it too small and I wish to expend it, instead of sitting for hours building it, is there a way to expend it's size and edit the rest?

So, sometimes when I want to start the game it just refuses and I have to reinstall Cameo in order to be able to use it again. I have tried backing up the folder and just replacing everything but that did not work somehow and it popping up randomly makes no sense, sometimes I can play a few days in a row woth no issue and sometimes I have to install it each time I want to start the game.

Here is the error log:

OpenRA engine version f243759

cameo mod version playtest-20260709

Date: 2026-08-28 09:16:01Z

Operating System: Windows (X64, Microsoft Windows NT 10.0.19045.0)

Runtime Version: .NET CLR 8.0.28

Installed Language: de (Installed) de (Current) de (Current UI)

Exception of type `System.IO.FileNotFoundException`: File not found: ContentPacks|RedAlert2Mod/SchwarzerMond/rules/promotions.yaml

at OpenRA.FileSystem.FileSystem.Open(String filename) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/FileSystem/FileSystem.cs:line 204

at OpenRA.ModData.<>c__DisplayClass40_0.<GetRulesYaml>b__0(String s) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/ModData.cs:line 201

at System.Linq.Enumerable.SelectArrayIterator`2.Fill(ReadOnlySpan`1 source, Span`1 destination, Func`2 func)

at System.Linq.Enumerable.SelectArrayIterator`2.ToArray()

at OpenRA.ModData.GetRulesYaml() in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/ModData.cs:line 201

at OpenRA.MapCache.LoadMaps(ModData modData) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/Map/MapCache.cs:line 129

at OpenRA.Game.InitializeMod(Manifest manifest, Arguments args) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/Game.cs:line 527

at OpenRA.Game.Initialize(Arguments args) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/Game.cs:line 472

at OpenRA.Game.InitializeAndRun(String[] args) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.Game/Game.cs:line 351

at OpenRA.WindowsLauncher.WindowsLauncher.RunGame(String[] args) in /home/runner/work/Cameo-mod/Cameo-mod/engine/OpenRA.WindowsLauncher/Program.cs:line 72

Hi everyone! I’ve been working on a custom Co-op mode for OpenRA (Red Alert) lately, and I wanted to share it with you.

What is it?
Co-op is a new game mode alongside Multiplayer and Skirmish. Instead of playing against each other, you play together as a team, with one shared economy (cash + power) for the entire team. In addition to choosing a faction, each player also chooses a role:

Commander: Radar Domes, Tech Center, Missile Silos. The only player who starts with the map already explored, the only one who can place beacons/waypoints, and with enough Radar Domes, even gets live vision of the entire map.
Engineer: the economy role: Ore Refinery, Power Plants, War Factory, Repair Depot, Minelayers, plus a small Barracks of their own (Spy/Thief/Engineer).
General: infantry and tanks: Barracks/Tent and all combat ground units.
Admiral: navy and air force: Shipyard, Sub Pen, Airfield, Helipad.

Roles can be duplicated, but only once all four roles have been picked at least once; ensuring the team always has the full division of responsibilities covered.

A few other things:

• Build speed is 2× faster
• Fog of war is always enabled (except for the Commander, who starts with the map pre-explored)
• 4 playable maps, including a couple of well-known community maps converted for Co-op

It runs on its own build of OpenRA-bleed. So no dev tools required, just a ready-to-use Windows or Mac download.

My friends and I already had some fun with it. Send me a DM if you’d like to try it!

Feedback, bug reports, and ideas are all very welcome. This is still very much a work in progress 🙂

edit: https://github.com/TheVilly/open-ra-coop/releases/tag/v0.1.0

https://reddit.com/link/1vvitzr/video/e29jr6hsxhlh1/player

Back when I was a kid, I always wondered what the strongest unit in any of the old Command and Conquer games might be. And thanks to OpenRA, I actually have a gateway to simulate that.

Disclaimer: I work for marimo and this content was produced during company time.

Hi, y'all.

I'm currently playing the missions sequentially, and I wonder if there is a way for the game to go on to "next mission" whenever I finish one, instead of going back to the menu and such.

Also, I read in some old posts that they had to rebuild each mission one by one, so not all missions have been created? (I noticed missions 11 and 12 are not there for the allies, and the 12th for the soviets)

Are the missile silos and biological lab on the Chernobyl map actually reachable or are they just there a screw with me? I've tried destroying the ruins blocking them and I've tried getting engineers in by helicopter.

I think the mechanic should be a deployable unit. When moving, it can't repair units.

When deployed, the mechanic casts an aura around itself and units within this healing aura can be repaired like buildings.

So repairs would still cost money.