Aurora Defense is a card-driven tower defense roguelike where you build a custom deck to place and upgrade buildings, summon units, and cast spells. When night falls, waves of a dark army swarm in and your units and towers attack autonomously to protect the Goddess Statue - choosing the right unit combinations and upgrade effects is the key to victory. Each goddess starts with a unique deck and relics, and as she grows you unlock more powerful upgrades and options. After each successful defense you earn new cards, relics, or encounter random events that steer your run in unexpected directions. Combine cards, relics, and building upgrades freely to craft a resilient defense and stand against the invading darkness.