Mega Man X Legacy Collection had Steam trading card support added on 24 July 2018. There are 6 cards in the series, and you'll receive 3 cards at random for purchasing and playing the game.
Mega Man X Legacy Collection 2 also has trading card support.
Trading Cards
Foil Cards
Badges
Level 1
X: Hunter Rank D
X: Hunter Rank D
Level 2
X: Hunter Rank C
X: Hunter Rank C
Level 3
X: Hunter Rank B
X: Hunter Rank B
Level 4
X: Hunter Rank A
X: Hunter Rank A
Level 5
X: Hunter Rank AA
X: Hunter Rank AA
Foil Badge
X: Hunter Rank AAA
X: Hunter Rank AAA
Booster Pack
Emoticons
:life_up:
(Common)
(Common)
:mmx:
(Common)
(Common)
:life_energy:
(Uncommon)
(Uncommon)
:sigma_logo:
(Uncommon)
(Uncommon)
:mmx_sigma:
(Rare)
(Rare)
Profile Backgrounds
MMXLC: X Background
(Common)
(Common)
MMXLC: Zero Background
(Common)
(Common)
Iris Background
(Uncommon)
(Uncommon)
Sigma Background
(Uncommon)
(Uncommon)
MMXLC Background
(Rare)
(Rare)
