Portal Cards

These playing cards were made using Valve's online comic "Lab Rat" http://www.thinkwithportals.com/comic/ and thus can be used only for your own personal set, not sold or redistributed for profit.

I printed the set through http://www.printerstudio.com but you could use similar custom card-making websites or just print off the cards yourself on your own printer (if printing yourself make sure to use a thick enough paper with semi-gloss!)