This looks boring, the concept sounds nice but in execution is crap. You can't have fun in a game that's too open ended, you just open it and feel like what do I do now, unless you have it emulating real life really well with endless events happening and a variety of real life things to do and the feeling that you're really living then it's boring.
Also if your choices have no weight to them then it detracts from any reality in the game, also I've never mined or done fishing in all my 18 years alive so what makes you think that anyone would want to do it in an open ended game in modern times!? The fuck? At least use modern tilesets and make a city, a sim game set in 1784 would be boring as hell to me, what's there to do? Churn butter and play piano?
And you really don't need to copyright your work, it's not like anyone's going to steal a project in such a linked up community. If they did it's not like there's much concept to steal either way.