If you're looking to play on consoles, Square-Enix's online store is offering 50 percent off select games with an ongoing holiday sale. 360 and PS3 copies of Sleeping Dogs are $14.99. If you're okay with passing up on features included in the more recent Director's Cut, 360 and PS3 copies of Deus Ex: Human Revolution Augmented Edition are also $14.99. You can also get ready for Lightning Returns: Final Fantasy XIII with 360 or PS3 copies of Final Fantasy XIII and Final Fantasy XIII-2 for $10 apiece.
Lastly, Target's recent credit card data breach has resulted in many of their in-store items being marked 10 percent off this weekend. Combined with their weeklong sale on 3DS XLs, that means you can pick up a 3DS XL today at Target for $135. If you don't have a 3DS yet, you might want to consider 2013's contributions to its lineup.
Update: This article has been updated to reflect changes in pricing for the Steam holiday sale. Prices that were originally listed for the Darksiders series, The Wolf Among Us, KOTOR 2, The Binding of Isaac, XCOM: Enemy Unkown and Director's Cut have all been altered. Thankfully, they're now all cheaper than when the new batch of sales began!