I am currently using 2 versions of steam, the Linux one for games compatible with Linux, and the windows version in wine for games which are not compatible. I was wondering if it is possible to get wine to work on games in Linux steam (the one not using wine) , so I do not have to switch back and forth between the two steams.
So, I know this is an old question, but there seems to be a way to do this. Sort of.
EDIT: So, having downloaded 1 game, it doesn't seem to be working. Launching the game does nothing. No errors.. just nada. So, YMMV.
It involves, tricking the client into thinking it can be installed by creating an appmanifest in the right folder. Luckily, since Steam is put together well and is tolerant of errors, you can just copy some other manifest, change a few fields, and it will automatically fix the file and start downloading the game.
For future reference in case the link breaks:
And, as of writing, this is as far as I've gotten. My game is still downloading and I thought I'd share as I stumbled across this QA when I was looking for the same answer :)
Choose “Add a Game...” > “Add a Non-Steam Game”.
Search for the game in the provided list. If you find it, add it and you're done.
If you don't find it, create a .desktop file where
Close and reopen the add game window. You should now find the game in the list.