Don't forget your brand
How familiar is "EA sports - it's in the game"
Brand is important no matter how big your company
Push your brand at every chance you can. The loading screen, make a screen before the game that has your logo, the settings page or instructions page. You can also have your logo on the game preview images within Google Play.
If you come up with a popular game you will be glad that your brand is embeded within the project.
Think big from the beginning.