This is the most fun and it is also provides the best odds in the house: period.
You can bet with or against the house, and as odds go, you are as close to "even" as it gets. After making a pass line bet (which is even money), "the odds" (bet behind the pass line) are exactly "true" -- in other words, the house has NO edge.
So if a game has double, triple or more odds (allowing you to bet 2,3 or more times your passline bet) you can approach a true "no advantage" wager.
And if you place bet you only give up a light percentage to the house.
Of course, over the long haul, all they need is that 0.6% advantage -- it adds up (that's the advantage with double odds)
The probability of a player hitting all 20 numbers on a 20 spot ticket is approximately 1 in 3.5 quintillion (1 in 3,535,316,142,212,180,000 to be exact). Horrible Odds!