Android and iOS (Tablet and Mobile) game app

We are looking to create a game app (similar to "flappy bird"). We do not want to disclose the entire description of the app itself due to security reasons. We are only looking for serious, dedicating, experienced programmers who can work consistently on a daily basis. Please contact us if you are interested and qualified. - App like flappy, with new and other design - Written in Unity3d and C - Stable version without bugs - Design and music comes from you - The user must be able to change the language - With in app purchases etc - We expect three proposals (design and running game) - We expect a professional consultation from the start to the end - Later, we would like to expand this app, different design and features If you want examples of the app, please write to us. Timeline: Developer shall submit a project timeline with understandable delivery time. Periods over two weeks will be ignored. Payment: 10% upfront 20% after backend ready 20% after beta test and works fine 30% after test final version and get source code 20% after including and works on the market places (it must be accepts) Please estimate your expenses properly and offer the final price for the whole of what is required , so that later no fees will be added. No infringement rights of third parties. We expect discretion and strive for long -term cooperation.