The Eternal Boundary, the first published module for the 2nd Edition AD&D Planescape campaign setting, I was lucky enough to get a physical copy from a friend as a gift and have enjoyed running it twice. First, using 5th Edition D&D rules and some home-brew planar race and faction options and the second time this last summer using the original 2nd edition ruleset as part of my Roll20 Great Modron March campaign. I’ve touched on the Eternal Boundary module before when I discussed using Perplexities as Hooks but wanted to do a full review.
As the inaugural Planescape module, aside from two brief single page adventure prompts in the setting boxed set, the Eternal Boundary does a fantastic job introducing some of the seedier areas of Sigil as well as the kriegstanz or undeclared war between the factions and the power of belief in the setting.
Spoilers for the Eternal Boundary Follow...
