Muon - Play LAN Multiplayer games on the go!

Muon is a decky-loader plugin that creates a hotspot for other devices to connect locally.

Download the Muon plugin from the decky-loader storefront!

List of Features:

• Steam Deck host must download the plugin; guests do not have to.
• Random host password generation per device restart with option to keep it static.
• UI showcasing IP addresses for host & guest devices with signal strength.
• Toaster notifications for joined & disconnected devices.
• Option to change IP and DHCP for Host Steam Deck.
• Ability to ban untrusted device IPs.
• Swap between 2.4GHz and 5GHz Signals for Distance or Speeds.
• Integrated offline wiki page of compatible games, mod installs, and dedicated server guides.

Preview:

Here are a sample of games verified and supported for Muon!

QUAKE III ARENA	GoldenEye: Source
Risk of Rain 2	Stardew Valley

Here are the websites for Compatible Games!

Official Muon Steam Group:

• Steam Group Page

Website for Infomation & QR codes + printable

• Muon Compatibility Docs

Planned Updates:

decky-loader plugin pre-store release (0.1.6) ✔

QoL & Bug Fixes based of from feedback (0.1.7+) ✔

Decky-loader Store Release (0.2.1) ✔

Compatibilty Lists (Alternative to Steam Group Page Intergration) (0.5.0) ✔

(0.5.X)

• Community Feedback bugs and tweaks (list in Issues)

(0.6.0) - End of October 2026

• Troubleshooting Button - Display page of disclaimers and troubleshooting guides (ripped from Wiki & Steam Group)
  Bug Fixes: Toaster notification when reconnecting devices occur

(1.0.0) - 2027.

• UI Polish, main.py code organised into sub-folders, OS Detection Stable

• Tentative Features: Muon able to host on BazziteOS (AMD APU Only)

• ARM Support (If Decky-Loader works on ARM handheld devices)

⚠️ PRECAUTION ⚠️

WARNING: The following actions are strongly discouraged. We assume no liability for any consequences resulting from these actions: Sharing your passphrase with complete strangers Weak Password with Remember Credentials Enabled

CAUTION: The following actions are not recommended but you can proceed: Using Muon on an Airplane Flight (Please follow flight attendant instructions if Muon Wi-Fi is causing pilot communication interfearances) Not having a lock screen on handheld devices or laptops

Need help? The Wiki page is here to assist you!

• Muon Wiki

Libraries Used & Credits

Built using the Decky Plugin Template as a basis.

Animated Wi-Fi Logo by: Esko Ahonen

Animated Steam Deck by: Valve Software

Tormak9970 - Used Deck-P2P as a reference point.

steve228uk - Used TunnelDeck as reference for installing dependencies locally

@Tormak9970 and @jessebofill - Used code from TabMaster to implement sleep management after a SteamOS change broke it.

Project members

Jenomorph - Project lead / Bug Tester / Game Verifier

WTLNetwork - Developer