Once you reach team level 90 and finish the Campaign, the Campaign portal changes its appearance, unlocking a new game mode — the Eternal Frontier. You can now earn extra rewards by fighting against endless waves of opponents.
Note: The Campaign will remain available after the Frontier unlocks.
Battles
In the Eternal Frontier, you progress through endless worlds, each containing 100 battles. Worlds differ in appearance and difficulty: the further you progress, the higher the difficulty and the more rewards you can get.
Battles in the Eternal Frontier do not require any kind of battle attempts and support both manual and auto modes. You cannot retreat from combat, but you can skip it. The skipped fight will be completed in auto mode.
Note: Your heroes start each fight with full health and zero energy.
After you win a fight, the game saves the team (or teams) you used in battle. You can then run battles in auto-mode from the team setup window, without entering each fight.
Auto-battle will continue using your saved teams until you press the Stop button, the saved team is defeated, or an additional team is needed.
Starting from the sixth world, fights can consist of multiple stages, thus requiring more than one squad to begin combat. Each squad must have at least one hero.
To view the possible rewards and how many teams are required in each world, press i in the upper-left corner of the Eternal Frontier menu and scroll down:
How to Skip Worlds
To skip worlds, you need to meet both of these conditions:
- Your team needs enough power to complete the final fight of the world. The game evaluates your saved team, i.e., the ones used in the previous Eternal Frontier battle.
- You must have the required number of teams. If the game has only recorded one team, you can skip worlds that require just one (i.e., 1–5). To skip worlds requiring two teams, you must complete at least one battle using two teams. This process repeats whenever a new team is added to a world.
If the skip is available, you will see this button:
Rewards
There are two types of rewards in the Eternal Frontier:
1. Rewards for winning battles include Rune Stones, Rune Spheres, or Eternal Coins. To see the reward for winning a battle, long-press its number:
You collect these rewards after you skip a world or win a fight.
2. Rewards for progress, or Idle Income, include Eternal Coins. You can collect the reward from the Reward Chest in the main menu of the Eternal Frontier.
The Chest starts generating Eternal Coins once you open the Eternal Frontier for the first time and continues producing them over time. How many coins you can collect per day depends on the number of battles you have completed. So, the more battles you win, the higher your daily earnings.
You can claim Eternal Coins anytime by tapping the Chest, but the full reward is available after 24 hours.
Note: Once full, the Chest stops generating Coins until you collect them, so claim your rewards regularly to keep earning.
You can spend Eternal Coins at the Eternal Frontier Shop. To access it, tap Merchant in the Eternal Frontier menu:
How to Open Campaign
If you want to enter the Campaign, press the Campaign button in the bottom-left corner of the Eternal Frontier menu:
To go back to the Eternal Frontier from the Campaign map, press the Eternal Frontier button in the lower-left corner: