My googling has failed me... can anyone furnish me with a list of Steam exclusive games? My definition of exclusive includes indie games only available on Steam (e.g. Terraria) and games using Steamworks, even if keys are available from other DD sites and retail (e.g. Fallout NV).

I'm trying to compile a list of Steam exclusives that I'm interested in, as I have found myself with some money in that annoying Steam wallet thing. I refuse to buy anything from Steam that I have the option of buying elsewhere though, no matter how good the price (if you want to discuss the pros and cons of Steam please take it to another thread or PM).

The ones I can think of at the moment:

Deus Ex Human Revolution
Civilization 5
Mafia 2
Metro 2033

I THINK DoW2 & its expansions are all steamworks

+ Dungeons of Dredmor

A good place to start would be these:

http://forums.steampowered.com/forums/showthread.php?t=1712878
http://forums.steampowered.com/forums/showthread.php?t=1852109

Fallout New Vegas + DLC

Magic The Gathering: Duels of the Planeswalkers 2011
Magic The Gathering: Duels of the Planeswalkers 2012
Lara Croft and the Guardian of Light
King Arthur the Roleplaying Wargame (only retail and Steam versions)
Dawn of War 2
All Valve games
Worms Reloaded
Alien Breed Trilogy
Dark Messiah of Might & Magic (only the multiplayer part)
Aliens vs Predator Classic 2000 (only the multiplayer part)
FEAR 2 (only retaul and Steam versions)
FEAR 3
Serious Sam HD: The First Encounter
Serious Sam HD: The Second Encounter
Runespell: Overture
Darksiders
Just Cause 2
Kane & Lynch 2
Madballs in... Babo: Invasion
Magicka
Zeno Clash

FEAR 2 is only Steamworks on Steam and at retail. D2D and GamersGate versions use SecuROM instead.

King Arthur is Steamworks only for versions that include multiplayer. GamersGate and Impulse versions do not include multiplayer and are DRM free.

There are several such games like this just to complicate matters.

Shogun TW2
Napoleon TW

maybe

Thanks for the answers so far guys! Thanks, the first list is pretty useful although it only covers 2011 games. The second list seems to mainly consist of things that have optional activation. That's not really what I need to know, but thanks anyway.

It's on Impulse , D2D .

Ah, a list of games to avoid unless I /really/ want to play it.

Thanks all :-P

That's basically what I'm trying to work out too.
I want to find out what I have no option of getting without Steam so I can see if there's anything there that I care about. :P

Terraria

Ah ok, thanks!