Rencounter had Steam trading card support added on January 25, 2016. There are 6 cards in the series, and you'll receive 3 cards at random for purchasing and playing the game.
Trading Cards
Heater
Elder
Rencounter
Stunner
Cutter
Concept
Foil Cards
Heater
Elder
Rencounter
Stunner
Cutter
Concept
Badges
Booster Pack
Emoticons
Profile Backgrounds