Airport Madness: World Edition had Steam trading card support added on 9 June 2015. There are 8 cards in the series, and you'll receive 4 cards at random for purchasing and playing the game.
Other installments in the series, including Airport Madness 4 and Airport Madness: Time Machine, also have trading card support.
Trading Cards[]
Foil Cards[]
Badges[]
Booster Pack[]
Emoticons[]
Profile Backgrounds[]