In Arcane Saga, there are " Idle Reward" that can be obtained for free based on elapsed time.

You can access this feature through the bottom right corner of the main game screen.

[Idle Reward/ Fast Rewards]

You can obtain offline rewards based on elapsed time.

You can immediately claim a 4-hour Idle Reward as a quick reward.

※ The maximum cumulative time and reward amount for offline rewards increase upon meeting certain conditions.

※ Maximum cumulative time for rewards - Increases upon leveling up account

※ Reward amount - Increases every 5 campaign stages cleared.

※ Fast rewards are available for free once per day for the first time only, and afterwards, you can use them by consuming crystals.