Write an Android application - shooting game

We need to develop a shooting game using old and new bombers like Luftwafa,B17,B29,B52,B1,B2,TU-95 and TU-160 This game will be based on levels and missions. With every mission, you have the option to choose the level if it is easy, medium or hard and with every mission you collect money and based on the money collected you will be able to buy a new bomber Every bomber has its own prize depending on its capabilities and service years for example once the game is installed the user will begin with Luftwafa then after enough money collected based on missions completed then user can buy more advanced bombers like B17 then B29 then B1 then B52 then TU-95, TU-160 and B2 should be the highest rate since it is stealth and have more advanced capabilities. User can pick the weapons to equip the bomber depending on the mission and target to be destroyed Game should be realistic like bomber will fall and explode if fuel is over or explode if it crashes or hits an obstacle Missions will be something like bombing targets in Afghanistan, Iraq, Yemen, Syria, Japan, Europe during WW2 etc. and realistic like bomber will face SAM missiles or artillery depending on level of difficulty chosen