Simple Android and iOS Game Development

Hi I want a simple Android and iOS game developed similar to Flappy bird. - There are many open source implementations of flappy bird and you can reuse any of them - Change the characters of Bird and Pipe with different characters and the background - I will NOT give any creatives but give you a picture on how the character (bird), pipe should look like and the background - Should have twitter and FB share in the game (if possible add screenshot of the top score while sharing) - Should have notifications in the game This is an easy task for the developers who knows real Android and iOS programming. ONLY experts and experienced developers. This project will be awarded immediately, so BID with confidence. As you know there is little programming and little bit of creative/animation/graphics work, I'm expecting good graphics from the developer. ALL Source code, files, creatives have to be shared with us. MAX BUDGET OF $250 plus a bonus of $100 for the right developer if the game/creatives exceeds my expectations. THIS PROJECT NEEDS TO COMPLETE IN 5 days.