Every year, a number of games get lost in the shuffle compared to the Call of Dutys and the Halos to become sleeper hits. These sleeper hits are also some of the most underrated games of the year as Entertainment Fuse's Staff picks theirs with Spec Ops: The Line, and XCOM: Enemy Unknown being one of the few.
CCG writes - "If you enjoy games like Factorio, Sixty Four is worth checking out. The asking price of $5.99 is very reasonable. On the title screen you can import/export your Base64 encrypted save file. This is handy to know if you want to make any edits. Otherwise you can enjoy picking up where you left off with the Steam cloud support."
MonsterVine: "Another Crab’s Treasure might be one of the most delightful games you’ll play this year, and is great fun for veterans or newcomers to the genre."
TSA writes: Feeling a bit crabby at the lack of new soulslikes in the last 15 minutes? Well, Another Crab's Treasure is absolutely the answer!
Can't say I particularly liked Spec ops. Although the story was pretty interesting I found the gameplay horrid. XCOM, wow I was blown away by this additively awesome title. Sleeping Dogs also proved to be quite the addictive title that was well written and played smoothly.
I'm not sure if it would be called a sleeper, but The Darkness 2 seems to be getting overlooked in most people's 2012 talk. I thought it was very fun with a good/interesting story, especially for a shooter.