Build a game with Unity

// i need a game which has a story line and the game should be a war game/related to mafia/crime based as i have already written a story which can be shown and narrated on different scenes while player plays the game. if you can build any other adventurous game that will be also fine but then you will have to write a new story for that game. // The game can be a cross platform game/ Android/ IOS that can be discussed later. // There are certain requirements which need to be fulfilled like i need the final project divided into 8 parts which i can show as a weekly progress. // For other detailed project description i will attach the project document as well.