Anyone having trouble deciding on a holiday greeting card to send out to their Xbox Live friend list this season should an easier search thanks to Valve expansion into the stationary market. "Left 4 Dead," "Left 4 Dead 2" and "Team Fortress 2" each have their own set available, featuring artwork by Alexandria Neonakis.

The cards run $15.95 for a pack of 10 with envelopes and are available through The Valve Store.

If Neonakis' name sounds familiar, it's probably because you've seen her home-grown creations in the past, which have included "Katamari Damacy" and "World of Warcraft" cards posted on her website. Valve seems to have recognized her talent and employed her thusly.

Images on the notes range from zombies adorned in Christmas tree lights to snipers dressed like snowmen, but all of them have Neonakis' signature feel of classic illustration with a touch of fannish appreciation. They're pretty much exactly what you'd want to send to any online friends that you primarily associate with over Steam or XBL.

According to the site, pre-orders entered now should ship at the end of November, so move quickly if you want to receive them in time to fill out and distribute for December.

What do you think of Valve's new line of holiday greeting cards? Which games would you like to see get a similar treatment? Share your thoughts in the comment section below.