Acceleration Pack includes 12 new game cards (4 rare, 4 uncommon, 4 common) designed by Junpyon and Hono of Orange Juice. Includes 2 cards of a new card type: Gift, granting exciting boosts or penalties to players. The cards of the set can be purchased from the in-game shop and used in both single and multiplayer. All cards in a multiplayer game can be used by all players via the center deck, even if they do not own the DLC.

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.