For the penguins, apparently

How do you introduce back-to-back articles on PlayStation Store sales? We haven't got a clue, so we're just going to dive straight into things. Sony has announced the fourth week of its holiday promotion in North America, and it includes a few humdingers for those in the market for some cut-price software. All of these will be available through Monday, 29th December.

Highlights include Metal Gear Solid: Ground Zeroes for just $6.80, Alien: Isolation for as low as $24.99 with PlayStation Plus, and Metro: Redux at $20 off. We'll allow you to peruse the full list of discounts on the PlayStation Blog, but do drop back and let us know what you'll be buying in the comments section below.

[source blog.us.playstation.com]