GFWL...which is an absolute disaster.
Oh good grief how true that is. I've seen some pretty complex systems of failure both from the inside and the outside, so I can understand how groups of people working over time can accomplish far more impressive disasters than any one person or short action... but GFWL? I honestly wonder how they thought that was going to do well. Talk about genuinely making it harder for me to enjoy the actual product. I didn't notice any DRM (though I'm sure it was there), just the sheer difficulty of getting those games to work (at all, much less "fully" work with a logged-in profile and all that).
So. Much. Pain.
Yeah, I had to fight GFWL daily during my time with Section 8: Prejudice. I absolutely LOVED the game, but the matchmaking, server browser and everything online about it was tied into GFWL and god what an awful piece of crap it was. Sometimes I had to do 15 searches for the server, even though I knew the exact name of the server, yet it would just not find it. Search, search, search, search, search, search, ah, there it is! *join*
"This server is not available." WHAT?
Search. "Server is offline" No it bloody isn't, my buddy is on it right now!
*rage*