I think BB messenger is more used (at least where we from, you should know), but Line is free (as far i know) don't know how popular is, and don't know about Vibe popular is either. What game is that? And the crop is like contacs crop or like we see in the picture with the arrows? Would be cool if is like contacs, but you do it like you think, doesn't matter really much is guess. Greetings.