The base is where all your cards are stored. This is the place where you can sell unwanted Transformer character and weapon cards for Credits. The selling values of the various cards are based on the rarity of the card and overall rating of the character or weapon .
You can have up to 300 Transformers character cards and 150 Weapon Cards at any one time.
When your base is full, you won't be able to acquire more cards. You will not be able to go on Missions, open any Space Bridge except for Premium Space Bridge or engage in any actions that will give you more cards. Cards obtained from Premium Space Bridge will placed as gifts under My messages.