Vouchers are challenging the supreme green in Vegas

Bally’s Las Vegas (702-967-4111) is testing paper-paying slot machines in which players take large payoffs in redeemable coupons. Small wins — like those two-quarter teasers — still come clattering into the tray. But isn’t that the thrill of it? Heck yes, and that’s why the truly lucky can choose the noisy torrent option. But if paper proves popular, it could spread to sister casino Paris-Las Vegas.

Forget the view. Sin City visitors can now play Taxi Slots in more than 300 Yellow, Checker, and Star Cabs (702-222-4222). A 15-inch flat panel entices riders to figuratively spin the wheel. But coupon wins spit from the machine, not cash. At least you don’t pay to play. -