local carnival last night and i noticed something. If you are observant enough you can cheat the game. Warning: Its not applicable to online games.
There are very few games at carnivals that are not rigged. I am not familiar with this "perya", but be very careful, especially if the game has a person/owner running it.
Also observe the game for more days and check who is winning. If the ones winning are the same 10 persons most of the time, it's a gang of friends of the "owner".