I love a good challenge especially if I have above average skills in those areas and if there is a way to test those skills against other players I find it particularly interesting. I had this in when I played hockey, baseball, pool, chess etc. Now I want to explore this in the game app area. A free game that requires a level of skill that more than one players participates in and award a weekly, month cash prize to the player who tops the list. Does anyone know the rules regarding this for IOS and Android games?