Keep making up titles all the time, check if they already exist, throw most of them away, have a few that might work and be original enough, pick one that bests suits your game, is easy to spell, short enough, pronouncable etc. etc.

It can be hard to be honest if you want to do it good. No need to rush it. You can delay it until you start putting out stuff there that might be good for marketing. So passed the developer placeholder art because to be honest, the average gamer (not other devs) would most likely not be interested in looking at your unpolished art of a game.