How it plays.

Build a maze. Send creeps. Outlast your rivals.

Three portals pour creeps down three lanes into lines of firing towers

Build your road.

Place towers anywhere on your side. The creeps walk the maze you make.

A crowded wave meeting a line of towers

Send them your worst.

Buy creeps and send them at a rival. Every one you send raises your income for the rest of the match.

Creeps bought from the summon tray leave the portals as income climbs

Hold the line.

Every creep that slips through costs you. Leak too many and your keep falls.

A boss wave arriving at the maze

Rank up.

Each tower grows along its own line. Pick the branch that beats what they send.

A cannon tower ranking up from wood to a twin-barrelled stone fort An ice tower ranking up from a small spire to a frost citadel