Spaceport Hope had Steam trading card support added on March 25, 2016. There are 5 cards in the series, and you'll receive 3 cards at random for purchasing and playing the game.
Trading Cards
Foil Cards
Badges
Booster Pack
Emoticons
Profile Backgrounds
Roses are Red, Violets are Blue
(common)
(common)
Electrical Grid
(uncommon)
(uncommon)
Desert World
(rare)
(rare)