The D-Ark Gallery is a free app that allows you to browse the entire gallery of the Digimon Tamers card game. There are 75 cards available for you to view. Each card has its own unique artwork, text, and sound effects. The app allows you to play the game in three different modes. The first is a normal mode, where you can play a normal game of Digimon Tamers. The second is a Challenge mode, where you have to beat the different levels in order to advance to the next level. The last is a Timed mode, where you have to complete a set amount of levels within a certain amount of time.