Mega Millions Matrix Eras
Every rule change the archive covers
A lottery that changes its pool becomes, statistically, a different game. These are the matrices Mega Millions has used, in order. Every count and every generated line on this site uses the current one.
MUSL Group Rules: "Amended January 9, 2025, to be effective with sales beginning on April 5, 2025, and the drawing held on April 8, 2025"; corroborated by Ohio 3770:1-9-984.
MUSL Group Rules: "Amended June 15, 2017 to be effective with the drawing on October 31, 2017"; corroborated by Ohio 3770:1-9-958.
MUSL Mega Millions Group Rules: "Amended June 25, 2013, to be effective with the drawing on October 22, 2013".
Ohio Administrative Code 3770:1-9-250: "one through fifty-six ... second field of numbers one through forty-six".
The date this era began is a placement rather than a sourced fact — no official text fixing it has been located. It affects the era label on old archive rows, not any current figure.
Ranges validated against 324 stored draws; no official rule text located for this era.
The date this era began is a placement rather than a sourced fact — no official text fixing it has been located. It affects the era label on old archive rows, not any current figure.
· dataset. Statistics and the generator use the current matrix only. Powerball has changed matrix twice since 2010, so figures from different eras are not comparable. Draws are independent and no pattern in past results affects a future one.