Credits (videopoker)
The Video Poker Machine doesn't spit out coins when you win
a hand. Instead it keeps track of the coins, and shows you how
many Credits (one per coin) you have accumulated. When you put
money in the machine, you also add to your credits. For example,
if you deposit $20 in a 25 cent machine, you will receive 80
credits.
When your credits decline to zero, you have to put in more money
to continue playing.