[MangaD]

Hello @rez93, welcome to the HFE forums!

Ok so, the person who enters your code will get a 3-star hero, no matter which act you are on.
It is you who benefits from the progress of the player who enters your code. Up to 20 people can enter your code as far as I know (not sure if the limit was removed).

It works like this:

• Earn a 3-star hero by inserting someone's referral code (only once);
  
• Earn a 3-star hero when someone who inserted your code finishes Act 1;
  
• Earn a 4-star hero when someone who inserted your code finishes Act 3;
  
• Earn a 5-star hero when someone who inserted your code finishes Act 5.
  

However, don't have high hopes on people inserting your code here because almost everyone already inserted someone else's code. The idea of this system is simple, it was made so that people share the game with their friends and gather more player population. Without referral codes, you can still unlock 70% of all characters.

Have fun playing. :)