One 25 cent "slot machine carousel" can have a progressive jackpot that's larger than another bank of machines exactly the same and standing side by side.

Two hands are dealt and you bet which one will win, or that they will tie. It is just like betting on Black or Red at roulette, and the payoff is even money, 1:1 (except for the standoff, which pays 8-1 or 9-1). The only difference between the Banco and Punto bet is a win on Banco will cost you 5% commission or tax levied by the casino - the in-built advantage.

The typical gambler might not really understand the probabilistic nuances of the wheel or the dice, but such things seem a bit more tractable than, say, trying to raise a child in this lunatic society of ours. ~Arthur S. Reber, The New Gambler's Bible