This comprehensive variant is an attempt to create a system that allows a group of players to play Runebound cooperatively as a party of adventurers, traveling, exploring and fighting together.

It is in its early development stages, however, it is complete and can be played as is. It is being playtested as much as possible, and as a result, has already been subject to several changes from previous versions.

http://www.boardgamegeek.com/file/download/4xth1vtcyo/Cooperative_multiplayer_Runebound.pdf

It is a work in progress, feedback is highly appreciated!