Here is the variant thread I was talking about, it has draft cards for more than 5 players. Spoilers ahead.
http://www.boardgamegeek.com/thread/807643/making-cards-for-...
We have played with 8 people, we used pieces from a Risk 2210 game. Although that game was super hectic because each faction basically gets about 6 territories before the board is full. At the same time, it takes a while for your turn to come back around, and you might have 7 different people gang up on your. My favorite game was when we had 6 people play at once. It seemed balanced and worked out well.
You really need to pay attention to what people are doing in these high player games because at any time, someone can do a sneak attack and take out your prime territory
http://www.boardgamegeek.com/thread/807643/making-cards-for-...
We have played with 8 people, we used pieces from a Risk 2210 game. Although that game was super hectic because each faction basically gets about 6 territories before the board is full. At the same time, it takes a while for your turn to come back around, and you might have 7 different people gang up on your. My favorite game was when we had 6 people play at once. It seemed balanced and worked out well.
You really need to pay attention to what people are doing in these high player games because at any time, someone can do a sneak attack and take out your prime territory