I'm playing Thief since it's December's Games with Gold giveaway, which is awesome. The game involves sneaking, and stealing, without major violence of any kind (so far). I love those types of games.
I uninstalled the Halo Master Chief Collection because I found out that:
A) On the Xbox One, all games are installed to the hard drive! I have a 500GB drive, and each Xbox One game file size averages anywhere between 15 and 50 GB each.
B) I couldn't justify using 65GB of precious HDD space for a game I played only a few times (I didn't get into Halo 1,2, or 3), and you can't install one Halo without installing them all.
I'm hoping more Xbox 360 games become backwards compatible, as I had a large library of digital games. The plus side is that since they're much smaller, I can easily hold all of them on this 500 GB drive and still have room for a number of Xbox One games, that is if they are made compatible.
Still, it looks like I won't be building a large collection of games, unless I plan on buying a massive external drive, so I'll just have to be careful.