"I’m willing to open source the project but don’t know anything about “created comments”,”MIT” or other license stuff. And I’m not interested to put tile in study them, I want to code not to be a lawyer.Is it repayable? Once you have a valid design what then?"
Creative Commons. It is the only standard I know. It is a licensing standard with which you can basically arrange the things people can do with your project and how they should attribute you when doing so. There are levels of managing the freedom to modify and distribute the program. It is very much non-commercial so there is opportunity to get rich from this or anything. Of course, it is quite hard to get rich from submarine games in any way
