When I click on almost any game it comes up with the message

"Only Windows users can play this game. If you are using an emulator, enter the URL for the game in File | Open Location on your BYOND pager menu."

So, I'm not a Windows user, and I can't play this game. Fine. So I don't want to see it on the list. Where's the option to filter by only Linux games?
There are no Linux games. BYOND is a Windows application. You can use Wine to run BYOND, but it takes some work, details can be found elsewhere on this forum.