Quote To my knowledge we've not yet had official communication with Valve about this, we've e-mailed them asking wtf, but we haven't gotten a response and probably won't until at least Monday. This is our best guess to the problem. Who knows, it might be the launcher. I just can't say it's necessarily the launcher yet.

Quote We've been removing the store bit from games that cannot run against just the Steam Runtime, without additional dependencies on the host system. Games that fail this are impossible to support reliably across multiple distributions, and will not be publicly advertised on the Store as supporting Linux going forward.

All concerned games are still purchasable, installable and playable on Linux.

To my knowledge all developers have been made aware as we were doing this, let's chat on Monday.

Quote Thanks for the clarification on exactly what is going on. Do you have a VM image or other test environment that we can use to determine if our game passes muster? (Also, Valve employee in the wild, how awesome is that?)

"To my knowledge all developers have been made aware as we were doing this, let's chat on Monday."

We found out due to someone from GamingOnLinux contacting our community manager about it. It kind of took us all by surprise. Though it is possible you contacted us at some point and we may have simply missed it?

Article taken from GamingOnLinux.com.

Thanks to me getting in touch with the Starbound developers, it seems a Valve rep has taken to reddit to explain what's going on with games having their SteamOS icon removed.You can see the conversation here , but for those who cannot access reddit it is copied below.When asked about the SteamOS icon for Starbound on reddit, a Starbound developer said this:Thankfully, a Valve rep has replied to it directly with this:This makes the situation much more clear, and should help both desktop Linux and SteamOS look better for everyone to play games.The icing on the cake here for me in particular:Glad to see a Valve rep in the wild, and helping with developers and users concerns.