Arma Reforger Startup Parameter Builder

Comma-separated list of mod IDs (GUID preferred, Project ID, or sub-directory name) to load on game start.

Additional directories the game searches for mods, separated by a comma. Absolute paths recommended.

Where the game and Workshop download addons. Files end up in <dir>/addons. Absolute paths recommended.

Directory for temporary addon content. Default since 1.4.0 is <addonsDir>/<addon>/temp/<temp data>.

Disables use of storage — no loads or saves are performed, online or local.

Skips the initial load request from the dedicated server's configuration file or script — the DS session starts brand new.

Forces save/load of player and general data normally synced with the backend to use local JSON files in the profile folder.

Override (in seconds) for the time before the application is forcefully crashed on freeze. Set 0 to disable detection. Workbench default is 60s and only generates a minidump.

Behaviour when a freeze is detected. 'minidump' (Windows only) silently writes a dump and keeps running. 'kill' (1.3.0+) is more reliable than crash but provides no freeze data.

Disables backend-related HTTP communication.

Disables all error message dialogs (VMEs, asserts, crashes, ...).

Path or parent-directory name for the profile directory. Examples: "David Armstrong" → My Documents/My Games/David Armstrong/profile. Or absolute path.

Disables multithreaded update.

World file to load on startup, relative or absolute. Workbench ignores this — use -load instead in Workbench.

Steam Query Protocol's bind IP address.

Steam Query Protocol's bind port.

Reloads the scenario when the session ends after the given delay in seconds, without shutting down the server. Since 1.3.0, value 'disabled' makes the server restart and relaunch as the same instance.

Ensures the correct server shutdown process. Pair with -autoreload to give a post-game window before shutdown. Recommended to circumvent 1.3.0's restart issue when paired with auto-restart-on-failure.

Overrides both gameHostBindAddress and gameHostRegisterBindAddress from server config.

Overrides both gameHostBindPort and gameHostRegisterBindPort from server config.

Path to the JSON server configuration file.

Enables night grain in multiplayer (dedicated or hosted). Single player always has night grain disabled. Was forceDisableNightGrain in 1.6.0.54.

Prints scenario .conf file paths to game logs. Workshop scenarios are listed only if no scenario is being loaded.

Loads a previous game session save. Empty value loads the latest save for the current scenario; otherwise pass the UUID from a save's meta-info.json.

Logs performance statistics every X ms. Empty = log every second. Reports FPS, frame time, memory, players, AI, vehicles, projectiles, replication streams.

Adds logging for voting system: who created votes, who voted, against whom.

Sets max FPS limit. Useful for servers, or to force a client max FPS (Video Settings preferred for clients).

Launches a local server and loads the given world. Config is ignored. Combine with -addons / -addonsDir to test local mods before publishing.

Verifies the integrity of all installed addons. Server shuts down and logs corrupted files if any are found.

Verifies and auto-repairs corrupted addons. Server shuts down if repair fails.

Network Dynamic Simulation diameter — number of cells replicated per client. 0 disables. Higher = bigger view range, lower performance.

Spatial Map cell resolution in metres (100..1000). Smaller = less pop-in but lower networked view range. For high view range use high resolution + small diameter.

Client/server timeout in milliseconds.

Disables the client/server timeout. Diag-only. WARNING: a non-responsive connection will deteriorate server performance and eventually OOM-crash. Debug only.

Number of virtual connections (0..200). Diag-only.

Disables validation of clients' resource database. Diag-only. WARNING: data mismatch may cause undefined behaviour.

Disables validation of clients' scripts checksum. Diag-only. WARNING: script mismatch may cause undefined behaviour.

Disables validation of clients' executable version. Diag-only. WARNING: version mismatch may cause undefined behaviour.

Disables validation of the developer binary flag — allows mixing developer and non-developer binaries in one MP session. Diag-only.

How many stationary spatial map cells can be processed per tick (1..10201). Defaults to -nds diameter. Tune up if pop-in occurs, down if spawning/teleporting tanks performance.

Global streaming budget split equally between connections. Cannot go under 100. Tune up to reduce client pop-in, down if server tanks on spawning.

Limit on streams opened per tick (1..1000, default 100). When server-vs-client open streams gap exceeds this, no new streams open this tick. Adjust to client networking speed.

Top limit of AIs. ≤0 disables any possible AI. Applies to both hosted and singleplayer scenarios — can save perf but can break the experience.

Number of batches to divide simulable AIs into per tick. e.g. 100 simulable AIs / 4 = four batches of 25.

Forces database file regeneration. Useful after directory changes. Takes a few seconds on start.

Sets the script debugger to a specific address.

Sets the script debugger port.

Disables AIWorld initialisation and ticking.

Disables Crash Reporter from appearing or sending reports automatically.

Disables navmesh streaming. Empty = all worlds. Since 1.2.0, can pass a comma-separated list of navmesh project names (e.g. BTRlike,Soldiers).

Disables shaders generation.

Forces shaders generation.

Replication uses long encoding jobs instead of short ones.

Threads working on short jobs (must finish in one update). Limited to CPU count or 16, whichever is lower.

Threads working on long jobs (can span multiple update iterations). Default = jobsysShortWorkerCount/2.

Maximum number of log files to keep.

Logs detailed info on RDB checksum computation (GUID + path order) for debugging RDB checksum mismatches.

Logs all script files used in compilation and their checksums.

Logs are not emptied on game start, keeping the history.

Logs every file system read/write to filesystem.log. Demanding — can produce huge files quickly. Debug use only.

Log level. Each level includes the ones below it. 'normal' logs everything; 'fatal' logs only extreme issues.

Log line time format.

Per-instance directory (under <profile>/logs/, or absolute path) for logs, memory dumps, temp files.

Prevents Crash Reporter from cleaning crash files on successful crash sending.

Allows minidump generation to include additional data. fullMemory dumps are largest.

Disables the security popup about RunCmd, RunProcess, KillProcess, and (outside profile dir) FileIO operations.

Suppresses the Crash Reporter dialog and sends the report automatically. Was -noCrashDialog before 1.0.0.

Script VM error reporting mode.

Adds a script preprocessor #define. Can be specified multiple times — separate values with commas in this field, the tool will repeat the flag.

Disables inline optimisation for debug purposes. Diag-only.

Turns on script VM memory allocations logging.