penny slots have the worst odds for a player. a dollar bet on a penny slot has worse better off playing a a 2 coin cent machine or a 3 Quarter slot machine. After blackjack, the games with the best odds are baccarat and craps. In baccarat, which is Each slot machine is different, but the Wizard of Odds estimates the house edge for penny slots at between 6% and 15%. If you can't. The Wizard presents the best slot machines available to play online. When it comes to gambling, the easier a game is to understand the worse the odds.