Rules of the Multiverse

The canon of The Association of Ishtar but in the Founder's Canon (aka stories were written by Bonsart and those who want to stay true to the intended universe) there are a couple of rules that cannot be violated.

The Core Concept

In order for the following rules to make sense, let's start with the intended concept.

Many of the Association's discoveries include creatures, objects and phenomenon that reach beyond Atlas realm of knowlegde or human comprehension. Therefore the world of Atlas is rather mundane for a Steampunk-world. But this will make every other world seem more fantastical for the characters who inhabit it.
 * 1) No Magic. Abilities by technological means and Outsiders with extraordinary abilities are fine.
 * 2) The Plane of Atlas is a Tier III world, meaning it is somewhat consistent with the technology available. Advanced technology exists, but isn't widespread or kept from the public. Exceptions to this are for example radios and early space rockets. The Association is one of the first organisations to use mobile wireless Telegraphs.
 * 3) A traveller and any object cannot stay outside of its own Plane of Existence for a certain amount of time without suffering from Traveller's Decay (see P-05). The Association believes this to be around 40 days. The only known exceptions, were people can reside as long as they like, are Hades (C-08) and Sanctuary. The latter is a facility on Atlas controlled by the Association were the store and house 'outside' objects and individuals.