I made a couple of screenshots in Alien Swarm that I want to share via Steam screenshots collection. However, in Screenshot Manager I can't chose "Alien Swarm" game (it's not present in the list).
I was able to locate screenshot files in
steamapps\common\alien swarm\swarm\screenshots, but I can't find a way to upload them in steam screenshots collections.
So basically I want to know if anybody can give me an advice on that - how can I upload jpg screenshots in my collection? Also, is this a bug in Alien Swarm installation that should be reported? If yes, what is the best way to contact Steam on the matter?