Hi guys... I'd like to talk about achievement and rewards in games. There are many types of them, so let me break it down into the following. Star Rating Given at the end of each level (e.g. Angry Bird). When I came across a game with this system, I usually tried to accomplished each level with full star before moved on to the next level. Most likely I will stop playing the game if I couldn't achieve it. Did you guys do the same thing? Badge System Mostly this system is just for fun. Usually the rules are when you do a task you will get a badge. The badge is actually meaningless to the game, it is just a nice to have things. For me, I tend to ignore this type of reward, how about you? Leader Board I think this one is the most basic achievement method. Compare your score with others/friends. Again, I tend to not look into the leader board, do you guys do the same? Unlock Content The method is something like this: by acquiring some number of stars or accomplishing some specific number of levels you will unlock new level. For me this is the most suitable achievement, however I felt a little bad if I'm unable to unlock it. So what do you think the best achievement method?