Yarr

Tile-based robot programming. Play with friends, build your own boards.

Play

Drop in a game with friends and bots — no install needed.

Launch in browser
Desktop app
macOS (universal).dmg Windows.exe Linux.AppImage

Edit boards

Author primitive boards, arrange them, define scenarios.

Launch in browser
Desktop app
macOS (universal).dmg Windows.exe Linux.AppImage

Desktop builds are unsigned for now — your OS will flag them the first time you open them.

First-time install help (macOS / Windows / Linux)

macOS

Double-clicking the app after you drag it to Applications gives you: “‘Yarr’ can’t be opened because Apple cannot check it for malicious software.” That's Gatekeeper telling you the app isn't signed with an Apple Developer ID. Two ways around it:

  1. Right-click → Open. In Applications, right-click (or Control-click) the app icon and choose Open. A new dialog appears with an Open button — click it. macOS remembers the choice; future launches open normally.
  2. If right-click-Open doesn't work (newer macOS versions are stricter): go to System Settings → Privacy & Security, scroll to Security, and click Open Anyway next to the blocked app.

Terminal shortcut if you prefer: xattr -d com.apple.quarantine /Applications/Yarr.app (and the same for BoardEditor.app) strips the quarantine flag so the app opens normally.

Windows

Running the .exe shows a blue SmartScreen dialog: “Windows protected your PC” with a single Don’t run button. That's because the installer isn't signed with an Authenticode cert.

  1. Click More info at the top of the dialog.
  2. A Run anyway button appears below the message — click it.

Windows remembers the decision for that exe; subsequent runs won't prompt again.

Linux

AppImage just needs the executable bit:

  1. chmod +x Yarr.AppImage
  2. ./Yarr.AppImage

If you see a sandbox error on older distros, add --no-sandbox. No system-wide install needed — AppImage runs in place.