Invisible City Productions has released a larger-than-average game of the month this week: Treefort Nations. In this strategy game, players control territorial monkeys building treeforts in the Great Wood and attacking one another with catapults. The game can be played by two to eight players, takes anywhere from a couple hours to a couple days (depending on the number of participants and starting resources) and requires only a six-sided die, some coins, and a few printouts to play.