Steam for Chrome OS is here. For real this time, they've actually released it, unlike when they claimed it was released during their recent developer event. Now though it's here at an "alpha-quality" level, meaning prepare for bugs and other weirdness.
Not only will this help those using Chromebooks do some gaming but Linux gaming as a whole too. Chrome OS is powered by Linux, and the Steam client on Chrome OS is the Linux version inside their special container — it works for both native Linux games and Windows games run with Steam Play Proton. Although, you do need to enable Steam Play manually (same as on a normal Linux desktop).
Starting with Chrome OS version 14583.0.0 which is in the "Dev" channel, here's what Chromebooks are currently supported for it (as long as they don't have an i3 CPU or less than 8GB RAM):
- Acer Chromebook 514 (CB514-1W)
- Acer Chromebook 515 (CB515-1W)
- Acer Chromebook Spin 713 (CP713-3W)
- ASUS Chromebook Flip CX5 (CX5500)
- ASUS Chromebook CX9 (CX9400)
- HP Pro c640 G2 Chromebook
- Lenovo 5i-14 Chromebook
There's a number of issues to begin with like anti-cheat not working with Proton games (even those with it turned on for Linux), Windows games using DirectX 12 don't start and more. You can see the list of issues, some tested games and instructions on their "Steam on Chrome OS Alpha" website.