N.Y. Comp. Codes R. & Regs. tit. 9, § 5008.9 – Lotto extra.

(a) Lotto extra is a feature of New York’s Lotto game. Except as otherwise noted in this section, the rules of Lotto apply to all Lotto extra wagers.
(b) Lotto extra shall determine winners from bet tickets by correctly matching some or all of the numbers in the player’s number selection against the winning numbers, bonus number and extra bonus number drawn by the division for that drawing.
(c) Players of Lotto extra are automatically included in the respective Lotto drawing, and have the added benefit of matching their number selections against the extra bonus number for additional prize levels not available to Lotto players.
(d) Forty percent of the gross Lotto extra sales for each Lotto drawing shall be paid into the New York Lottery prize account for allocation of prize winnings.
(e) Not less than 38 percent of gross Lotto extra sales for a particular drawing shall be the amount allocated to the winning pool for that particular game.
(f) During each Lotto drawing, the commission will draw an extra bonus number. Numbers will be drawn in the following sequence: the first randomly chosen six numbers will be the winning numbers; the seventh number will be the bonus; and the eighth number will be the extra bonus number.

(g) Lotto extra bets may be purchased for a minimum of $2 per two game panels; $1 of such bet is on the Lotto game, and $1 of such bet is for the Lotto extra feature.

(h) Determination of prizes.

The prize structure and odds for this feature are:

	Match	Odds	Pool Percentage
5	+ either bonus	3,754,789.50	14.40%
5		147,246.65	5.50%
4	+ either bonus	29,449.33	25.25%
4		2,355.95	5.75%
3	+ either bonus	883.48	15.00%
3		108.18	11.00%
2	+ either bonus	72.12	23.00%
	Overall Odds	40.47	100.00%

(i) In the event that supplemental prize funds are necessary to fund prizes for Lotto extra, those funds will be supplemented from unclaimed prize funds.
(j) At the discretion of the commission, the commission may offer additional features of the Lotto game. Any additional feature of the Lotto game offered by the commission shall be established in an executive directive, and the details of such game feature shall be publicly announced by the commission.