Steam Trading Cards are virtual sets of collectible items on the Steam platform. Upon collecting an entire set the cards may be crafted into a Steam profile badge, which awards the user with experience points and various profile enhancements. Badges can be leveled up four more times until it reaches level 5. On top of the regular set of cards, all games that support trading cards also have a set of extremely rare foil cards, that can be crafted into a single level foil badge.
The user will receive half of a set's cards for free upon playing the game. The other half (as well as additional levels after the first one) will have to be a traded for with other Steam users, bought from the community market or picked up from booster packs. Trading cards are currently available for Oddworld: Abe's Oddysee, Oddworld: New 'n' Tasty and Oddworld: Munch's Oddysee. Oddworld: Abe's Exoddus and Oddworld: Stranger's Wrath HD are expected to receive cards at a later time.