The BRX, unlocked.

The Battle Company BRX is a rifle-shaped laser tag gun with a wireless sensor headset, sold by Battle Company and built like it walked out of Halo: infrared shots, real hit sensing, a scope you sight in yourself, a speaker full of sounds. Battle Company built it as a serious system for home players, not a toy. Out of the box it plays a handful of built-in games from its own menu. Open BRX is free, open-source software that takes over the game: a laptop keeps score and sets the rules, a phone on each tagger shows the player what is happening, and the taggers themselves stay exactly as they shipped.

The BRX Companion holds the Bluetooth link to one tagger and shows what the tagger cannot: health and armor, ammo and reserve, the clock, the weapon in hand, who is on the net. It picks the loadout, calls the hits, and tells you when you redeploy.

• Loadout. Primary, secondary and a perk. Browse the arsenal, read the numbers, and fire a try-out on the real tagger before you commit.
• Down. Who got you and how long until you redeploy. The headset goes dark and the tagger stays silent until the count ends.

Play the defaults or change the cap, the clock, respawn, health, armor and what each slot may carry. Save it. Modes are Python, and new ones are welcome.

• TDMTeam Deathmatch

  Squads score a point per elimination. Downed players respawn after the delay and rejoin. The highest score at the time limit takes the match; the operator can also set an optional score cap.

• FFAFree-For-All

  No teams, everyone is a target. Each elimination scores a point. The top score when time expires wins; the operator can also set an optional frag limit.

• INFInfectionIn development

  One operator starts infected. Survivors who go down switch sides and hunt their old squad. Survivors win by outlasting the clock; the infected win by converting everyone.

• LMSLast Man StandingIn development

  Every operator carries a fixed pool of lives. Once they are spent there is no respawn. The last operator, or last squad, still standing takes the match.

• EXTExtractionIn development

  Gather loot, then reach an extraction point and channel the extract. It is loud: everyone hears the chopper coming and converges on you. Survive the timer and your loot is banked. Die and you drop it all for someone else to take.

• KOTHKing of the Hill

  One hill: a Bluetooth control point on the field, a spare phone in the utility role. Stand on the point to take it. An enemy point drains to neutral before it builds up for you, and the side with more living players on it moves it. Every second your side holds it with a living player on it banks possession. Most possession time when the clock runs out takes the match.

Every player carries a primary, a secondary and a perk. Sixteen weapons are in the game, in six classes. Twelve of them can take the primary slot and fourteen can take the secondary, because a weapon that cannot kill makes a fine backup and a poor primary. Two more, the rocket launcher and the rail gun, are pickups: you take one from a station during the match. Each weapon is written to the tagger as its own data, not firmware: fire mode, rate of fire, damage, magazine, reload and swap delay. That is why a shotgun, a bolt rifle and a charge rifle feel like different weapons on the same tagger.

Five perks fill the third slot, and every one costs something. Body Armor gives you more armour, but it slows your reload. Armour Piercing sends your primary straight through armour and shields, but it hits for less. No perk is a free upgrade.

• Assault 5
• Close Range 2
• Sniper 3
• Support 1
• Heavy 2
• Sidearm 2

brx-mcp is the instrument underneath everything. A Python command line and an MCP server that drive a BRX over Bluetooth from Windows, macOS or Linux. Scan, identify, listen. Read firmware, battery and health. Write custom weapons. Load sound packs over USB. Capture and replay the IR word with the ESP32 rig.

# find every tagger in range, then read one
$ python -m brx_mcp scan
Tactix-XXXX   FE:AD:FD:XX:XX:XX   -58 dBm
Tactix-XXXX   FE:AD:FD:XX:XX:XX   -71 dBm
$ python -m brx_mcp diagnose FE:AD:FD:XX:XX:XX
firmware v4.32 · battery 7.9 V · ping answered

# or let an agent drive the bench over MCP
> scan for taggers and read every battery
tools: scan · connect · send · wait_for · diagnostics · panic

brx-mcp also speaks MCP, the protocol AI agents use to call tools. So an agent can run the bench with you: find the taggers, read the batteries, fire a test shot and read what came back.

Everything a player carries. The tagger and headset are stock Battle Company BRX. The phone is any Android or iPhone with Bluetooth, running the BRX Companion. The mount is an ordinary rail phone clamp. The taggers stay exactly as they shipped.

Hardware, operation, gameplay, sound, repairs and the full developer protocol, gathered from Battle Company's documents, the community and the bench, and written once. Searchable, including by command.

• HardwareThis page names every part of the BRX tagger, headset and grenade.
• OperateThis page covers stock BRX gear: a tagger, a headset, maybe a grenade, and the Callsign app.
• GameplayThis page covers every weapon the BRX can fire, how health and damage work, every native game mode and its settings.
• SoundHow BRX plays sound: what the gun does on its own, what a host has to trigger, and how to change what you hear over USB or through a firmware update.
• Sound bankEvery sound id stored on the BRX gun, in one searchable table, with its meaning where we know it and a community label where the community has one.
• FixDiagnose a tagger that won't fire, work through the fix ladders for pairing, sound and battery, and see what the community repairs.
• DeveloperThis is the interoperability spec for the BRX tagger and headset: transport, framing, every known command and event with its field map.

• MIT licensed. Run it yourself, change it, ship your own modes and sound packs.
• Nothing flashed. Everything goes over the tagger's Bluetooth serial protocol. Your taggers still work with everything else.
• Field ready. Start on a laptop hotspot. Players walk out of range and the game keeps running on the phones.
• Credit. Protocol discovery: LaserTagMods (JEDGE / JBOX). Open BRX is independent and not endorsed by Battle Company.

• AndroidBRX Companion

  The HUD. One phone per tagger, mounted on the rail. iOS builds from source.

  version

  0.4.15

  from

  GitHub Releases

  Get the app v0.4.15
• LaptopMission Control + brx-mcp

  Clone the repository and run one command. It sets everything up and starts Mission Control.

  $ git clone https://github.com/tony99nyr/open-brx
  $ cd open-brx
  $ ./start.sh
  # start.cmd on Windows

  Read the docs
• SourceGitHub

  The whole platform, the protocol reference and the manual in one repository.

  license

  MIT

  repo

  tony99nyr/open-brx

  Open on GitHub