To start with, you form your idea of the game. Then you make decision about rules of the game and technical specifications. You determine where the game should be installed – into social media or mobile application. You choose dimensions, Photoshop color settings. May be, you have already developed your marketing strategy. What is the target market, audience of the game? Who is your target game player? What set of themes is preferable? Will it be just another Egypt adventure or game about gangsters?