I am a 13 years old boy and have a great interest in game designing and I think this is the best software I have found.I want to make a game ( a indie game ) and sell it on my website.I have heard that if I earn more than 100,000 $ I have to buy Unity pro, I accept this condition.I can also advertise about Unity on my website for free.I am not going to use any assets of Unity and others in my game.But I am willing to use the terrain , so can I use it?Do I have the permission to sell it on my website? if not then please tell me the steps to sell my game.I have heard that i need a patent , what is it ? Please help me! Thank You!
quoting unity faq:
Yes you can create and sell a game with the free version of Unity, without paying royalties or any revenue share. However, the free version of Unity may not be licensed by a commercial entity with annual gross revenues (based on fiscal year) in excess of US$100,000, or by an educational, non-profit or government entity with an annual budget of over US$100,000.
Please also be aware that the feature set of the free version is not intended for the production of professional games and interactive content. Lastly, games made with our Pro trial licenses may not be distributed nor used for commercial purposes.
tl;dr:
yes, you can create and freely distribute any* games without advertising unity, and you can use any unity assets in the process
the only thing that remains question is whether your country’s laws allow you to sell your product if you’re 13, but i guess your parents can help you with that
*there are some limitations like online gambling games have special rules but normal games don’t usually fall into these categories