do·na·tion [doh-ney-shuhn]
–noun
1.
an act or instance of presenting something as a gift, grant, or contribution.
2.
a gift, as to a fund; contribution.
Source: dictionary.com
I don't get why you expect something in return when it's a donation.
If you donate you would get a forum icon for donators (several to choose from) and you'd get priority on the game creation queue.