Liberation shipping

[rerathbun]

There also is a trend toward supplements that only require one or two boxed games, Like Winter Soldiers (BoB and ElsR) and Hammer & Sickle (RtB and ElsR). There are already plans to do a book supplement using Kursk: South Flank and Burning Tigers.

The real driver is sales, of course. Supplements sell better when they only require one or two (preferably popular) games.