1. After your account reaches level 5, you will have a referral link for friends.
2. Send them the link to download Karmaverse Zombie.
3. When they download the game using your link (the system only remembers if they used your link to download, and whether they registered for the alpha/beta test or just registered on our main page does not matter) and reach level 5 themselves, rewards will be sent to both players.
4. Rewards for inviting players will increase incrementally based on the number of players invited.

Invitee: After reaching level 5, they will 2 serum and a free PvE energy refill.

Inviter: Rewards will increase after successfully inviting 1, 2, 3, 5, 10, and 20 friends. See the in-game page inviting friends for details on the reward tiers.