I'm wondering if I can legally sell a game made with Eclipse Engine or any of it's successors? As I understand, Eclipse Engins is open source and normally open source comes with a copy of a "agreement" about what you can or can't do with that code, in case you modify or change stuff in the code or content, you are able to modify the credits to add your own but you are too obigated to keep the original credits. In the case I start selling a game, or even if it is F2P but I want to sell content on it, like objects for appearance, or even if I dont think on selling but I think on receiving donations to help me to develop the game, is this legally allowed? In case that no, the answer is obvious but in case of yes, which would be the requirements (other than keeping original credits)?