Between all of January's blockbuster releases, we're guessing you're already up to your neck in gaming opportunities this weekend. However, if you're looking to add a bit more slag to the top of the pile, digital retailer Impulse has cut the price of a few PC games for this weekend only. Until tomorrow, you can pick up fantasy-platformer Trine for $9.99, or the self-explanatory Gratuitous Space Battles for $11.49. There's a few other discounts currently running as well -- go check out Impulse for more delicious bargains.