Cosmic OS Beta

A Gaming Operating System

Cosmic OS is built for gamers by gamers: it unifies every launcher you already use while giving you its own OS shell with curated apps, widgets, and system controls so your games and tools always feel at home.

Unified tabs for every store Optimized for PC handhelds

Download apps, productivity tools, and new games from the Cosmic OS store without switching contexts.

Steam Epic Xbox Ubisoft Battle.net
Cosmic Mode
Instant launchOne-click start
Sync onCloud & saves
Handheld readyDeck, Ally, Go

What Cosmic OS Does

Cosmic OS reorganizes every game, utility, and launcher into an operating system workspace that syncs with your existing libraries while also letting you install new apps, updates, and OS-level workflows directly from Cosmic OS.

U

Unified Library

Automatically imports your entire game collection from every launcher and flags missing installs for the OS app store.

S

Smart Sync

Saves, updates, cloud data, and achievements stay linked to their original platforms.

1

One-Click Play

Launch any game from any platform instantly with zero switching.

H

Designed for Handhelds

Optimized UI for Steam Deck-style devices, ROG Ally, Legion Go, and Windows PCs.

Compatibility & App Sources

Cosmic OS runs on every handheld and desktop rig you love while syncing with every launcher, service, and app source without replacing your workflow.

Steam Deck
ROG Ally
Lenovo Legion Go
AYANEO
Desktop PCs
Laptops
Docked Mode
Handheld Mode
Windows 11
Proton
Cloud Gaming
Custom Builds

Universal Library

Unified filters, categories, tags, and search across every store.

  • Smart filters by platform, install status, controller support.
  • Custom tags and shelves that sync back to the right launcher and show up across the Cosmic OS overlay.
  • Instant search across every service you own.

Cosmic Performance Layer

Keep handhelds cool and fast with contextual overlays.

  • Optional FPS overlay, temperature monitor, GPU/CPU usage.
  • Per-device profiles for Steam Deck, Ally, Go, and desktop rigs.
  • Battery-aware optimization and fan-friendly power modes.

Cosmic Cloud Sync

Automatically backs up launcher settings plus Cosmic OS app layouts so all your devices stay consistent.

  • Cloud profiles for inputs, overlays, and quick layouts.
  • Restore your launcher setup and OS profiles when you swap PCs or handhelds.
  • Peace-of-mind backups before every major change.

PC Handheld Mode

Controller-friendly navigation, expandable tiles, and a dedicated OS mode that keeps your games, apps, and system settings within easy thumb reach.

  • Optimized large tiles and thumb-friendly spacing for the OS shell.
  • Context-aware mode switching that keeps you in Cosmic OS without dropping to desktop.
  • Sleep-resume with saved OS state and launcher sync.
  • Haptics and on-screen hints tuned for handheld controls.
Cosmic Library Performance Cloud

Safety + Compatibility

  • Fully safe, respects your launcher logins, and sandboxes Cosmic OS apps.
  • Never stores passwords; uses official APIs.
  • No modification of game files.
  • Compatible with Windows 10/11, macOS, Linux, and Android.

Supported Devices

Steam Deck, Asus ROG Ally, Lenovo Legion Go, AYANEO, handheld PCs, desktops, laptops, Android phones, tablets, and handhelds all share a single Cosmic OS experience.

Cosmic OS stays light so your games do the heavy lifting.

Community + Beta Program

Become an early explorer and help shape the future of unified gaming.

Built by gamers, for gamers. Cosmic OS is the unified gaming experience we've always wanted, and we're excited to share it with you. Join us on this journey!

Join the beta list

Tour Handheld Mode

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