2032b3a0_Winning_at_Slots_e_Best_Number_of_Coins_to_Play_Rules_and_Reasons
[Type of Machine] Multicoin/Multilines [Rules and Reasons] 
Play one coin each on as many lines as you like. Play one coin on each line if having winning combinations land on paylines you didn't activate bothers you, otherwise play one coin. If there's a Hidden Buy-A-Pay, play enough coins to activate it.
Winning at Slots
Rules and Reasons