NEKOPARA Vol. 2 had Steam trading card support added on 22 February 2016. There are 8 cards in the series, and you'll receive 4 cards at random for purchasing and playing the game.
The other installments in the game series, NEKOPARA Vol. 0, NEKOPARA Vol. 1, NEKOPARA Vol. 3, NEKOPARA Vol. 4, NEKOPARA OVA and NEKOPARA Extra also have trading card support.
Trading Cards
Foil Cards
Badges
Booster Pack
Emoticons
Profile Backgrounds