Hello, I can finish the game in less than 5 days.
I submit a high product and I'm available for anything.
You have 2 options for the quiz data.
1) A database inside the game, you can add all questions and categories to the database before building the game.
2) An online database, you can add all questions anytime and whenever the game is launched it grabs the latest questions from the server.
Adding data to the database will be made easy because I will wrap the function into a user interface that you can use to add questions without a single line of code.
Please contact me if you have any questions or more details to share with me.