The Swapper is excellent, great that you mentioned it.
I want to contribute Remember Me (Jun 04, 2013), coincidentally. I know Alex didn't like it all that much, and I can see the flaws, but for me at least it was an aesthetically AMAZING game, had pretty fun combat, although maybe simplistic and a bit repetitive, and the memory remix stuff was new and interesting, although not enough sequences of that. I really really enjoyed the story as well.
Also, maybe not forgotten, but Heart of the Swarm (March 12, 2013) came out this year. The campaign part was maybe a bit short but great, for me. I don't mess much with the multiplayer, but I heard it's not bad:)
Hopefully they will improve the system so that a random troll can't claim copyright on your video. Seems many companies are still okay with you uploading clips of their games, so that shouldn't be a problem, if the automated system was better.
On the other hand, this might help independent games, certainly their creators would appreciate people showing their games on youtube.