Build a maze of towers in your field (bottom). Send creeps at the enemy (top) to raise your gold per second. Towers and sends share one pot of gold. First to lose 25 lives loses.
Pick one of your builds below. A build is five tower types (Damage, Range, Splash, Support, Heavy), each in an element you choose; your opponent sees it and you see theirs. Tap a cell in your field and pick a tower from the ring. Tap a creep card to send. Unsent creeps keep collecting on their cards. The strip under a creep card upgrades it. Tap a placed tower to level it up (five levels) or sell it. Elements combine: Stone shatters what Ice has frozen, Fire blasts what Poison has marked, and so on. The build screen lists them.
A build is the five tower types you take into a match, each in an element you choose. Keep up to five builds. Tap one to change it.