7/10 because it would be much better if you could donate donuts without buying and you could only have 1 player to prevent players of Hero Zero by creating a lot of players only for the donuts.
I love Hero Zero.I have an idea why when you win a fight against another hero you dont get some experience? for example some heroes may have used all of their energy 4 times and they want 20 experience to level up and they want to get level up to go 60 level to get pet thats why i think it should get added