Imagine, that your game works like the virus, so it feels the first condition of successful game. Is it enough to become popular on social games market? Unfortunately no, one time users do not earn many money (as much as you would like) and do not help  you to get to the top-10 Facebook games. There is a good example for this case. It is a Flappy Bird game. The news about the game was like a virus. Everybody would like to try it, advice it to the friends, post to Facebook own results. But where is this game now?
This game has zero retention, because there was no reason to return the game. The game has no levels, no bonuses, no finite lives and even no game levels or variety of game characters. So, the game should convince the player return in a day or in a week. The next gold rule of the game tells about retention. Retention indicates how many players remain attached to the title over a certain period of time. Your players should fill  the necessity to return to the game again and again. There is only one question what you should to do? The game should have as many variety of heroes, levels, combination as it is possible. Read more →