Steam isn't the only game in town when it comes to holiday sales on the PC. Even though GOG.com is wrapping up their holiday sales, they plan to celebrate the start of 2014 with one as well. For the next two days you can pick up multiple packs of games for 70% to 80% off. Some of these packs include the Mighty Heroes Pack (Heroes of Might & Magic 1-5 and Heroes Chronicles), Chronicles of Ultima (Ultima 1-9), and Cinematic Adventures (Runaway 1-3, Jack Keane 1 and 2).
Head on over to Gog.com for more info and for a list of what all packs are on sale.