Convenient for a coin of system or other offered daily, You want your player builds a building? Start a timer, leave the game and let the timer run. Your timer will always rotate even if the player leaving your game. This is the equivalent of a construction time on facebook games or time to grow vegetables. Example : http://ivaltekstudio.com/DataCenter/Jeux/Build/index.html [Made in France]
End User Licence Agreement (EULA).