SirPrimalform: I don't understand how the games have DRM by your definition. You realise they don't need the client to run, right?
So let's say you've downloaded and installed a game through the client... you can then .rar the files and move them to your computer that doesn't have Desura installed... doesn't even have an internet connection and the game will still work there.
How is that DRM?
Well, by my definition it IS still DRM, since, technically, you are not installing the game if you copy the installed files. Installing is the process of creating those files. But, quite frankly, I don't know what to make of it. I'm surprised there are still games that can work just by using that "dirty" trick, copying the installed files from one place to another and I didn't know you could do that with Desura games (but I doubt with all of them). Still, I'm more inclined to see that as a trick to bypass DRM rather than a feature that makes the system not DRM.
You know what, I'm going to try it right now and maybe I'll even read the EULA of Desura.
UPDATE: See?, Q.U.B.E. gives me a .NET Framework error if I just copy the files somewhere else. I guess it's kind of an easy to solve problem (maybe reinstalling .NET Framework), but we are definitely pushing the system away from its boundaries. I'm not convinced by your argument, sorry.
UPDATE2: Well, it was easier than that. Read the first point of their
Terms of Use: "A Subscription does not permit you to make copies of the Application or to use the Application separately from the System." According to them, you cannot use a game, nor make a copy of it, outside of the client.