Available on Mobile
Steam now available for Windows 10 Mobile
It just randomly popped up. I'd suggest you give it a try. Ps: It's not an UWP.
Description: The official Steam app for mobile Windows devices provides authentication, trade, and community features to secure and enhance your Steam experience.
You'll be able to:
- Ensure the security of your account with Steam Guard multifactor authentication;
- Send and confirm trades with friends;
- Sell your in-game items in the Steam Community Market straight from your Inventory;
- Browse the Steam storefront and keep up with the latest games, promotions, and sales;
- Remotely download and install your games straight to your PC at home.