The expansion pack is due out this fall, developer PopCap announced today, noting that it "includes all the levels and challenges from the PC and Mac versions of Peggle Nights" and has been "tuned specifically for the [Xbox Live Arcade] player." No price was given.

"Peggle Nights essentially doubles the size of the Peggle XBLA universe," boasted Peggle co-creator Sukhbir Sidhu. A breakdown of the pack follows below:

60 new Peggle Nights levels for multiplayer over Xbox LIVE and all single player/local modes

Peggle Nights Adventure mode (60 levels), including the Nights story

60 new Peggle Nights Challenges

A new Peggle Master, Marina

Peggle Nights trophy room

Peggle Nights adventure statistics

New style shots from Peggle Nights PC (available as title upgrade for all Peggle XBLA players)

Three new Xbox 360 achievements worth a total of 50 gamerscore, bringing Peggle up to a total of 250 gamerscore.