Well, there have been several over the past couple of years but...

Diablo 3

I'm a big fan of ARPG games too...


To whomever said Torchlight 2 above - It's available directly from Runic's (developer) website steam-free. The game launcher does try to get online to look for updates/patches but there is a way to get the game to run without the launcher (and thus, totally offline). It's super easy and can be found on the Runic forums.

Torchlight 2 is great.

It's steam only (and one of the consoles, forgot which one)

Recently I contacted Super Giant Games and asked about Transistor. They said it has no DRM, same as Bastion (I have it DRM-free on Humble, Bastion that is).

They say they may consider other platforms in the future.

As for games I have not played due to DRM, it's a very long list. Also on the list are games that are Steam only or that need some sort of client to run. Sins of a Solar Empire Rebellion, Galactic Civ 2 as well. On GC2, they say they have no plans to release it DRM-free in the near, as they told me this just a couple weeks ago on Facebook (Stardock that is). I probably won't be playing Galactic Civ 3 either. I've yet to play most games by Paradox Interactive, but I know some of there games are DRM-free and sold through their site, but not all. I'd also like a DRM-free version of Torchlight 2, that doesn't require Steamworks. I hear you can get it DRM-free on their site, but I can't verify that. I'm also waiting for a lot of defunct games that have either been patched DRM-free or that are just old and lost to come to GOG, no matter how long it takes. Hopefully with GOG Galaxy a lot of would-be titles will come here that may have otherwise never made it.

I fall in between.
If I think a game will come on GOG I will wait, (My GOG library outnumbers steam 2-1)
but I don't have a problem with steam and there are certain games I want to play
and they require steam so I purchased them:

Civilization
Paradox games in general
X-com: Enemy unknown

and Knights of the old Republic, which I just finished playing, and it was great.

That said I don't think I would ever by a ubisoft game because of Uplay, and though I have now two games that require EA's Origin (which I didn't know when I bought them) I will try to avoid it in the future.

FInally the tages and SecuROM stuff bothers me and would keep me from purchase.

(I have a game on Gamersgate, I really wanted and bought, the original Shogun Total War, but it has SecuROM and I haven't installed it because of that.)

There is no additional DRM, but you can't get it without steam.

That's why I believe there is going to be a DRM free version eventually. I assume the game will hit the bundles rather sooner than later.

I can't say there are any games I haven't bought at ALL because of DRM, but if there's a reasonable suspicion that it's going to come to GOG or by the dev without DRM, I'll hold off buying it elsewhere.

As I said, Steam is not DRM, Steamworks is the DRM. Steam is a launcher, a store, whatever. But it's not, itself, DRM. There are tons of games available for purchase through Steam or activatable on Steam (ie: Humble Bundles) that are 100% free of DRM. http://steam.wikia.com/wiki/List_of_DRM-free_games

Skyrim uses Steamworks for it's DRM, thus it does not work without Steam. You can fairly easily remove Steamworks from any game that has it, if one is so inclined. I won't provide details or links, but suffice to say Steamworks is not hard to remove, and I plan to do so for any games that have it if Valve were ever to shut down Steam and did not themselves provide a way to deactivate Steamworks. Actually, I recall a time several years ago where Valve stated they would remove Steamworks from games if they ever had to shut down Steam, or maybe just update Steamworks to not "phone home" and check licensing. However I don't know if that only applies to Valve's games, or every game in the catalog that uses Steamworks.

Personally, Steamworks is unobtrusive enough that I tolerate it. I'm not restricted in any meaningful way from playing the games I want to play. I can buy a game once and play it on any computer I happen to be at, no install limits, one purchase gets me Windows, Mac, and Linux versions (for games that are multiplatform) which I put to good use regularly as I use all three OSes. However, the moment Steamworks becomes too intrustive is the moment it will get removed from the games in my library. And one thing I don't tolerate is additional DRM on top of Steamworks. Looking at you, Uplay, GFWL, and Origin...

By this reasoning GOG is DRM because you have to log in (authenticate) to be able to download the games you've purchased. In the case of DRM free games on Steam, Steam is simply the vehicle for which you purchase/activate, download and install the game. There's no authentication (beyond actually purchasing the game/activating a product key, just like you do with GOG). This is nothing like potAYto, potAHto.

Diablo 3.

DRM is fine.

But ALWAYS-ONLINE for single-player is NOT.

Any Total War or Civilization games.

Edit: Since Steam crap. I automatically ignore Steam exclusives, regardless of how many titles I have from a company before.

I didn't mind Diablo 3's DRM. It's Blizzard. For them the customer base is pretty much almost always online. but I do mind any DRM EA and Ubisoft games have.

The only new games that I bought not from GOG is Torchlight 2 from the developer (not steam version) which requires entering a serial number. Last thing was physical media around 5yrs ago. Anything that requires a client (Steam, origin,....) or online connection to work (Diablo 3....) are automatically ignored from list.

I am ok with physical media checks that require 1 time activation even if it installs spyware like securom as I just use the cracked version and don't let that stuff get installed on my PC. As digital distributions don't allow that luxury, I only buy from GOG.

The list of games I could have bough if no DRM is too long but just examples are Diable 3, Starcraft 2, Mass Effect 3,...

I must have spent hundreds of hours on Diablo 2. And I have NEVER played Diablo 2 online.

More than a decade ago, I used to buy every Blizzard game that came out: WarCraft 2, Diablo, Diablo 2, WarCraft 3. However, I have not bought a game from Blizzard since WarCraft III:

I do not play online, multiplayer or MMO. So World of WarCraft was never a consideration.

I did not like the first StarCraft. It was okay but became repetitive towards the end of the expansion, especially for me who had just played through WarCraft 2 and the expansion. The experiences of playing StarCraft and WarCraft 2 were too alike. However, I was willing to give StarCraft 2 a try... until I saw StarCraft 2's horrible voice acting (of Raynor in particular) and the god-awful storytelling on YouTube. The cutscenes were so bad and corny that they made me cringe. So I have never played StarCraft 3.

Obviously I have never played Diablo 3 because of its always-online requirement. (I also checked out the story and cutscnes of Diablo 3 on YouTube... they were awful as well. Seriously Blizzard is the WORST in telling a story.) However, I'll get it if Blizzard ever decides to remove the always-online requirement for single-player, but I wouldn't count on it to ever happen.

Blizzard is kinda like BioWare to me: I used to buy all their games. However, I have ceased buying from them after they moved into new business directions. (Mass Effect on Xbox 360 was the last BioWare game I bought and played; I bought Mass Effect 2 but got rid of it on eBay after I found out about the DLCs.)

Which is fine... I've moved on to other developers and other games.

I understand that, hence the cracked version.