You can earn free coins in several ways:

1. Completing Chapters– You’ll receive chest reward that may include coins after finishing every 10 levels.
2. Daily Rewards – Log in every day to collect bonus coins.
3. Events & Challenges – Participate in special time-limited events for extra coin rewards.
4. Watching Ads – Sometimes you can watch short ads for free coins.
5. Team Gifts – Being part of an active team and helping your team mate may grant extra coins as well as from team events.