Sports played with spheres and circles are easier to master than sports played with rectangles and squares, such as Rubik's cubing and throwing bricks into windows. Circle fun with today's Groupon to Silver Nugget Casino in North Las Vegas. Choose from the following options:

• $6 for three games of bowling (up to a $10.50 value, depending on the day of the week), plus one shoe rental (a $2.25 value)
• $19 for $50 worth of bingo play (pack purchase, validation, or special)

At Silver Nugget Casino, players pan for fun and winnings with an array of money-machines and sociable games. If you opt for bowling, blast pins away with a rolling bullet on a Friday or Saturday night, when cosmic bowling lights lanes with an unearthly hue and makes everything glow like swarms of hungry fireflies. The 24-lane bowling center is equipped with a slick scoring system, snack bar, and arcade area, so no one need tire or fossilize between bouts of pin-toppling. All three bowling games need to be used in one visit, but games may be shared among multiple people (only one shoe rental is included).

If it's fame, fortune, and the smell of a fresh 5x5 matrix that you're after, go for a game of bingo. Silver Nugget Casino offers a session for any formation, from letter x and hardway (a straight line without the free space) to coverall and football player's pinky. Regular sessions are held daily in the afternoon and evening. Payouts vary based on the game, time, and day of the week; typical games pay between $50 and $150. Click here to see complete lineup and payout info.

You must be 21 or older to play bingo.