To ask if the house always wins seems a bit silly to me. One needs only to look at the growth of the gaming industry over the last 50 years to know that the house wins in the long run.

The only time it might seem that the house doesn’t win is if someone finds a way to beat a particular game. When this rare situation occurs it’s only a matter of time before the house discovers it and shuts it down. But they still benefit from these situations because the publicity that follows the news of a big winner increases the popularity of the casino.

All games and machines are mathematically guaranteed to show a profit over time. No games are set against the house, and all provide an edge for the casino. All you are hoping for is to be part of the payout instead of the intake, giving you a chance of exiting with your wallet bulging with newfound money.