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. Transformers TCG: Rise of the Combiners features the debut of combiners — character cards that combine to create a single giant robot! This expansion contains six combiner groups, including Predaking. Characters combine using new "Enigma" cards and by having all parts of the combiner in bot mode on the battlefield or in the KO area. Each section of the combiner may have an upgrade, and all damage from each section carries over to the new combiner bot.