The Coliseum is a daily event where you use your Era Units to defeat a Coliseum Boss encounter! Only Era Units can be used in the Coliseum. There are 4 different Coliseum Bosses each Era, and which one you face rotates each day.

Each boss has several difficulty tiers. All players start at Tier 1 difficulty for each boss. Fully depleting a Coliseum Boss’ health bar wins the difficult tier and unlocks the next one. Beware that bosses become more deadly and durable as their health is depleted. Dealing damage to the boss earns points, and reaching certain score thresholds for the first time in each tier will also grant one-time rewards!

Your score on the Coliseum Leaderboard is determined by the tier of the boss you faced and the score you earned. Tier progress and top score is saved per boss across the entire Era, but the leaderboard resets each day. You may attempt the Coliseum up to 5 times each day, and your leaderboard placement is based on your best Coliseum attempt that day. At the end of each day, you’ll receive Coliseum rewards based on your leaderboard position.

The highest tier has an overtime phase. Players who get 100% on this tier get extra time to deal as much damage as they can to increase their score on the leaderboard.