Serious Sam HD: The First Encounter had Steam trading card support added on 18 March 2016. There are 8 cards in the series, and you'll receive 4 cards at random for purchasing and playing the game.
Other games in the series, Serious Sam HD: The Second Encounter, Serious Sam 3: BFE, Serious Sam 4, Serious Sam: Kamikaze Attack, Serious Sam: Siberian Mayhem and Serious Sam's Bogus Detor also have Steam trading card support.
Trading Cards
Foil Cards
Badges
Level 1
Tourist
Tourist
Level 2
Easy
Easy
Level 3
Normal
Normal
Level 4
Hard
Hard
Level 5
Serious
Serious
Foil Badge
Mental
Mental
Booster Pack
Emoticons
:beastsam:
(Common)
(Common)
:clocksam:
(Common)
(Common)
:flowersam:
(Uncommon)
(Uncommon)
:nuclearsam:
(Uncommon)
(Uncommon)
:kingsam:
(Rare)
(Rare)
Profile Backgrounds
Big and Beastiful
(Common)
(Common)
Flight of Harpies
(Uncommon)
(Uncommon)
Aftermath
(Rare)
(Rare)
