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15 Defense had Steam trading card support added on 1 April 2017. 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

Card Artwork

  • Octopus
  • Snail
  • A Heart
  • Fishes
  • Charged Star
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