My friend and I have launched a game (No Life) back in February. It was, for us at least, relatively popular, but we forgot about it after a while, when it became less popular. Now we're thinking about bringing a big update to the game, with more objects, a new statistic, and some more overall improvements, but it would take a lot of work and we don't want to invest that amount of time in it if people just don't know about it.

So the question is, how do you make your game popular again after you've released it?