I thought you might be interested why your game didn't package, os I went ahead and tried to. It turns out it wouldn't package because of the name of your project, it contained a dot in it's name. The c# files for the game where treating the dot as an operator, and where searching for the class/struct members :D.
So I renamed it to "P_FishingGame_V2_2" and it all went like a charm.
This video helped me rename it correctly: https://www.youtube.com/watch?v=qGn1SfX6s9
After that you will have to delete the "intermediate" folder and run your project so it can rebuild it correctly.
About the game itself, it has a very nice graphic style, and I didn't feel any lag while playing the packaged game, but couldn't go to any boats that were there :D In my opinion there is very little to do in that big beautiful world right now.
Also I could fish in the grass, which was surprising :D Other than that good job!