Twofold is five-card draw against a pay table, the way the machine in the corner plays it. Twos are wild: a deuce stands for whatever card makes your best hand.
Bet one to five chips and deal. Tap the cards you want to keep (tap again to let one go), then draw: the rest are replaced. What you end up with pays by the table, times your bet.
Twofold: every deuce in a winning hand doubles the pay. One deuce doubles it, two make it four times, three make it eight, and all four deuces pay sixteen times.
A natural royal flush (no deuces) pays 250 a chip, or 4000 on a five-chip bet, so the top bet is worth it if you are chasing one. A pair of jacks or better gets your chips back.
The chips are only chips. Run out and the machine hands you two hundred more. The book says is the hold with the best expected pay, if you want a nudge; the book button sets those holds for you.
Keys: 1 to 5 hold a card, Enter deals and draws, b bets one more, m bets the max, k takes the book's holds.
Sounds covers the card noises, and the slider next to it covers everything. Music plays soft ambient music. Night mode warms the screen for a dark room. Chill mode turns all three on for late nights. Every switch is remembered on this device.