The Transformers Trading Card Game is a battling card game designed for two players. Players build a team of Transformers character cards and power them up with a customizable deck of battle cards. Transformers character cards are twice the size of standard playing cards; they can be flipped from bot mode to alt mode and back, and they feature premium printing treatment on one of their sides. The deck of battle cards features Action and Upgrade cards to enhance Transformers character cards. The Metroplex Starter Set contains cards for only one player, and it features Metroplex, Scamper, Six-Gun, and Slammer character cards as well as a forty-card deck of battle cards including three battle cards — Rally the City, Height Advantage and Protected by Metroplex — not available in the Autobots Starter Set or booster packs.