At first glance, DLC Quest is a platform game. Except, well, at the start of the game your character can only move right. To allow him to move left (and jump), you have to "purchase" the Movement Pack DLC. In order to hear any audio, you must purchase the Audio Pack DLC, and to pause the game, well, you get the idea. The way that you purchase these DLC packs is (fortunately) through in-game currency you collect throughout the levels (as you would in say Mario).