The following is some general information about the world of Sinai, which might be known by those who live there -- at least by some of the better educated peoples that live in a central place such as Rephidim. If you have a PC which has purchased Lore of Sinai, you can click on sub-sections that provide additional information, to give you a rough idea of what sort of knowledge your PC should be privy to.
3.1 Sky Islands
More than twenty other sky islands exist. Their erratic movements make
them difficult to predict. They look like flying mountains covered
with vegetation, and are often populated by exotic animals not found
on the surface. Their undersides are thick rock that tapers down to
long stalactite-like formations. No two sky islands are alike, and
they vary from two miles in diameter to Rephidim's twenty mile oval.
Sky islands hover above Sinai at an elevation of approximately 10,000 feet
ASL (above sea level). Although flight at this altitude would normally be
hazardous due to low air pressure and low temperature, sky islands have an
"envelope" that accompanies them, varying in intensity according to the
relative size of the island. Larger sky islands are able to maintain more
temperate climates and air pressure, while the smaller ones tend to still
be fairly cold and with low air pressure compared to the surface. Due to
this phenomenon, large sky islands are essentially permanent, mobile
high-pressure fronts, and it is common for storms to be spawned as a herald
of the coming of a particularly large island such as Rephidim. Sky islands
are also often surrounded by obscuring clouds, making them hard to locate
at times.
3.2 Airships
Rephidim and several races sail airships which are lifted by hydrogen
gasbags and propelled by sails. Most airships transport cargo and
passengers. There are warships to defend merchanters from pirates and
"hold" the sky over contested territory. Rephidim warships are armed
with arbalests and burning oil bombs, and sometimes actual guns (very
carefully handled). In very recent years, airships have started to be
fitted with alcohol-powered engines and propellers ... or replaced entirely by
zeppelins of unique construction. Due to the ever-present threat of Quantum
Uncertainty, these machines still need "quantum stabilizers". These take many
forms, but they are typically spinning wheels, bobbing armatures, and other
pieces that really serve no obvious mechanical purpose. Engineers have
discovered that, amazingly enough, machines with extra "doo-dads" like this
actually become more reliable than those without ... just so long as the
devices aren't installed in such a way as to jeopardize the structural integrity
of the craft. Also, hand-made decorations, a fresh coat of paint and other
attentions paid to fixing up the machine to look nice seem to have a certain
positive effect on performance, amazingly enough.
Some of the ground-living races resent Rephidim and their control
of the skies. Airships are occasionally shot down, forcing the downed
crew to fight their way through bandits and attempt to escape to a
friendly village where they can light a signal fire to attract
Rephidim's attention.
3.3 Ancient History
The Temple calendar (denoted in years by "Rephidim Time Reckoning", or "RTR")
goes back over six thousand years ... but it is believed that the world of
Sinai is a great deal older than that. Theories and legends abound about who
may have walked Sinai before the present age.
3.3.1 The Expedition
According to the Temple calendar, the period or event known as the Expedition
occurred over some six thousand years ago, officially marked as Year 0,
Rephidim Time Reckoning, give or take a century or so. It is generally
believed that all of the present known sapient races have origins dating back
no further than this point in time.
3.4 Commonly-Known Flora and Fauna
It has long been accepted that it would be impossible to catalog all of
the species of creatures and examples of plant-life to be found on
Sinai, particularly with the amount of mutation that takes place on
the surface, and the occasional influx of new types through the
Forbidden Zones.
Although many of these creatures are alien in
nature and appearance, there are many examples of species that would
be found on Earth, though they tend to collect in certain "pockets"
on Sinai's surface, such as the woodlands of Sylvania.
This helps to explain the occasional reference
to, say, an Eeee as a "bat", or a Skreek as a "rat", since it wouldn't
make any sense to use such terms unless the "real" animals were
present to draw comparisons to. Many people of Sinai never actually
see such creatures, and might be particularly shocked if they
encountered non-sapient, non-humanoid versions of themselves.
The following present a sampling of the more unique
creatures and plants that a well-traveled Sinaian might know
about.
More Details on Flora and Fauna of Sinai
3.5 Common Games
There are a number of popular games that are played not only in
Rephidim, but enjoy some use elsewhere, thanks to the advent of
airship travel.
Some of the more popular games include: