Will Deus Ex Human Revolution have to be installed via Steam?

And if not, then how do I know if I'm buying a non-Steam version? (For example, I bought half life 2 on a dvd from Game, and then I still had to download Steam and create a steam account.)Will Deus Ex Human Revolution have to be installed via Steam?
The reason Half life 2 required Steam was because it was made by Valve, the company that created Steam. All of Valve's games such as L4D, Portal, etc, require Steam as do a few other developers, Tripwire Interactive and Creative Assembly ( there last few titles require you to have Steam). As far as I know these are the only ones. A majority of PC games do not require steam at all.



Now, Deus Ex is not associated with Valve in any way other than being on sale on its client, Steam. Now if you buy Deus Ex on steam then well of course you will need it because you bought it from there. If you buy it from some other digital distributor or buy a retail physical copy, then no you wont need steam.Will Deus Ex Human Revolution have to be installed via Steam?
You will not have to. You had to get steam because steam is made by valve and hl2 is made by valve. That's what they do to get customers on steam :D

You will not because it's not a steam game and does not have multiplayer that uses steamworks for hosting.

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