On the few occasions where I have bought a game on Steam from my mobile phone, the app gave me the option to start downloading and installing the game on my desktop. What I don't see, however, is any way to start downloading a game that I previously bought (in this case, a preorder for Saints Row IV) to my desktop.
Is there a way to remotely kick off a download for a previously purchased game through the app, or does the option only appear when completing a transaction?
On the left menu, click on your name to bring up your profile. Scroll down to your list of games and click "View All Games".
From here, it will list all games you own, whether or not they are installed, and include an icon that will allow you to install them remotely.
Go to your games list (accessible by going to your profile, then clicking Games), which will be at a URL like steamcommunity.com/id/[YourID]/games/.
From here, click on the "All Games" tab. This will show you which games you currently have installed, and will include an icon that will allow you to remotely install any games that are not installed.
