can i download apps on i cloud?

iCloud is a specialize storage system. Apps for iDevices are purchased and downloaded using the App Store app.

You can if you have an appleID working on another apple device then you can download that game if someone having your apple ID and have download that game on his device .

You can redownload previously purchased Apple items from iCloud by:

Downloading past purchases from the App Store, iBookstore, and iTunes Store