Heroes War: Counterattack has an option to redeem coupon codes in-game for free rewards.
Here’s a list of all currently active codes.
ZOXDEC01
Added: December 16, 2020
HEROESWARWELCOME
Added: November 23, 2020
Expires: Unknown
Rewards: Energy x100, Diamond x100, Premium Draw x1
HWDISCORD
Added: November 23, 2020
Expires: Unknown
Rewards: 5 Normal Summon Tickets
HWFG3000
Added: November 23, 2020
Expires: Unknown
Rewards: 2 Normal Summon Tickets, 100 Energy
How To Enter Codes
Tap on the “Event” icon located on the right side of the main screen.

Tap on the “New” tab.

Scroll down the list of banners until you see the “Coupon Exchange” one.

Enter your code.

The rewards will be mailed to you.
