Download the launcher

The launcher runs your game and links it to the run — you install it once, then pair it to your lobby from the web.

Download for Windows

.exe installer · Windows 10/11

What happens next

  1. Run the installer. Windows SmartScreen will flag the publisher as unverified — that is expected for the Alpha build, which is not code-signed yet. Click More info → Run anyway: it is an unsigned build, not a dangerous one.
  2. Open the launcher and point its ROM library at your legally-owned GBA games. It verifies each dump locally and never uploads one.
  3. Back in the browser, open your lobby and use Pair a launcher to connect it — a QR code and a short pairing code, good once.
  4. Launch. The launcher randomizes your run locally and starts the game.

Requirements & notes

  • Windows 10 or 11, 64-bit.
  • One download — the launcher fetches its emulator and tools on first setup, hash-verified, once per machine.
  • You bring your own games. The platform never ships ROMs — not now, not ever.

More help: Launcher help · Getting started.

Windows is the only build today — the emulator the launcher drives runs there first. macOS and Linux land later; there is nothing to download for them yet.