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Mods & modpack

Use our modpack — these versions are guaranteed to work with the server. Mixing in other mods or versions is the usual cause of "can't join the mod event."

What's in the pack

  • CBA (@CBA_CO) — Community Base Addons. Required to run the other mods.
  • @adwasp — bundles ASR AI, TGW fixes, and WASP fixes (new thermal scopes and various gameplay fixes).
  • @admkswf — Sidewinder reload-time fix.
  • JSRS 1.5 (@JSRS1.5) — sound overhaul. Optional — it's purely cosmetic. If your download doesn't include it, or you prefer the vanilla sound, just leave @JSRS1.5 out of the -mod= list; the server doesn't require it.
  • Blastcore Visuals R1.2 (@Blastcore_Visuals_R1.2) — effects. Optional — it can cost a lot of FPS, so drop it on lower-end systems.

Download & install

  1. Download the modpack: Google Drive.
  2. Unzip it into the folder where Arma2OA.exe lives (default: C:\Program Files (x86)\Steam\steamapps\common\Arma 2 Operation Arrowhead\).
  3. Enable the mods — either via Steam launch options (below) or the in-game Expansions menu.
  4. After enabling @admkswf, also enable the TGW Zeroing mods in-game, then restart once more.

Startup parameters

In Steam: right-click Arma 2: Operation Arrowhead → Properties → Launch Options, and enter:

-noSplash -malloc=system -world=empty -mod=@CBA_CO;@JSRS1.5;@adwasp;@admkswf;@Blastcore_Visuals_R1.2

Syntax: separate parameters with spaces, separate mods with ;. Without Blastcore:

-noSplash -malloc=system -world=empty -mod=@CBA_CO;@JSRS1.5;@adwasp;@admkswf

Keep -malloc=system — it's what stops the game freezing/crashing every few hours.

Optional client mods

Some players run additional client-side mods that the server does not require and that do not affect gameplay balance. These are community-vetted as safe to load alongside the standard pack:

  • STHUD / STGI — alternative HUD and ground indicators.
  • NameTags — shows player names above units.
  • No blur — removes post-process blur effects.
  • DSAI — improved AI sounds (client-side only).
  • GDT — Geometry Detail Textures, improves surface texture quality.

Check the Discord #mods channel for the current list and download links before adding any of these. Load them after the main modpack in your -mod= string. If a session event specifies a strict modpack, leave optional mods out for that event.

Low FPS after installing?

  • Disable Blastcore first — it's the heaviest.
  • ASR AI (inside @adwasp) can also lower FPS, especially on lower-end systems. Most of its cost is server-side — server admins can tune it in userconfig\ASR_AI\asr_ai_settings.hpp (see Performance).
  • More in Performance.

Mod-event join issues

If you've installed the mods correctly (the V10 pack is ~116 files) and still can't join a mod event, a simple reboot has fixed it for most people. If not, check Windows, BattlEye & launch fixes or ask in #support.