Under Spire

Under Spire combines real-time combat with strategic card play. You build a deck, face strange monsters and climb a spire whose structure changes with each run, choosing between high-risk routes with greater rewards and a more cautious path. You can also compete against players around the world after reaching the top.

Build your deck

Each hero unlocks talents and can choose one of three starting card groups. As you climb, you decide whether to add randomly offered cards to your deck and combine them to suit your strategy. When you meet a boss, you can begin the next adventure by fusing two cards into one. Some spire events also enhance cards in distinctive ways, beyond the fixed enhancements available through card upgrades.

Fight and explore

Combat takes place in real time, and some levels require precise timing and positioning. The changing spire brings different enemies on each climb. You can find powerful treasures that may interact strongly with your deck, though obtaining relics can sometimes come at a cost.

Heroes and pets

At the start of a run, each hero can choose a pet to accompany them. Pets can be used at any time during battle, but need to rest once the battle is over.