Rather than let this rot on the local hard drive, I decided to post what I have so far.
1 Disclaimer
The following work of fiction extrapolates the role of particular religious ideas in the context of the role-playing-game Eclipse Phase. Where applicable, I've linked to Wikipedia. I mean this to entertain, not to educate, nor to offend. If you want to learn more about the Mormon religion, try www.lds.org. If you want to learn more about the intersection of Mormons and transhumanism, try transfigurism.org. If you want to argue theology, correct "mistaken interpretations," or proselytize, try doing something productive instead.
2 Established
2.1 Published material
I found only one mention in the published material (as of early 2011), a reference to "New Salt Lake" in Sunward.
2.2 Forums
I found only a few mentions of Mormons in the Eclipse Phase forums. Arenamontanus wrote most of these posts as descriptions of the games in which he plays. This provided
The Mormons are around in force.
The Mormons survived the Fall unusually well.
The Mormons had a habitat, Deseret, in High Earth Orbit, but lost it in the Fall.
A split exists between the Extropian Mormons and the Mormon Tabernacle on Mars.
There exists a Mormon NPC, a "bad-ass gunslinger" a la the Dogs in the Vineyard RPG.
3 History
A short time line of significant events in Mormon history. It includes a good many real-world events, both as context for latter recycling, and because real-world Mormon history deeply involved settling the American West, which Eclipse Phase's Mars parallels.
3.1 Pre-Fall
3.1.1 In Real Life
Early History
Revelation
Ohio
Missouri
Nauvoo
Succession Crisis
Pioneer Era
Migration to Utah
Mormon Reformation
Utah War
The Railroad, Polygamy, the "Mormon Question"
1890 Manifesto
Modern Era
Reestablishing Church Institution
Second Manifesto
Statehood
Multiculturalism
3.1.2 BF 60+
Increasing Mormon emphasis on "Preparedness"
White Horse Prophecy
Mormon Folklore
American Pinochet
Theodemocracy
3.1.3 BF 60-40
BF 60-50
BF 50-40
Great Exodus (c.f., Mormon Exodus) begins The first space elevator's completion, the initial Martian terraforming efforts, and the continuing unrest on Earth combined with Mormon emphasis on preparedness and their early history of persecution (i.a., 1838 Mormon War, Illinois Mormon War, Utah War, Edmunds-Tucker Act, Missouri Executive Order 44, etc.) to encourage the The Church of Jesus Christ of Latter-day Saints to establish off-Earth colonies. The first such was the Tabernacle on Mars, and the second was the HEO habitat Deseret. The Great Exodus continued until the Fall. It founded no other new uniquely Mormon colonies. It placed Mormon communities in other ore-existing habitats.
3.1.4 BF 40-20
BF 40-30
Great Exodus continues
Founding of Tabernacle on Mars at New Salt Lake
Possibly the first Masonic lodge on Mars
BF 30-20
Construction of Deseret habitat in HEO
3.1.5 BF 20-0
BF 20-10
Great Exodus continues Various Mormon groups settle in pre-existing communities, mostly in Extropia, but also on Luna.
Third Great Awakening A strong revival of religious belief, especially in North America, Central America, occurs. Relative economic decline fuels the event, and reactions to the invention of the cortical stack, AGI, and the various uplift projects fuel the social movement.
BF 10-0
Great Exodus ends Various small brinker and isolate communities founded. These few communities have small populations, odd theological quirks. The bioconservative fraction of these settlements later join the Jovian Republic.
3.2 The Fall
The worst thing that ever happened.
Most of the human race dies.
Deseret habitat in HEO destroyed.
3.3 Post-Fall
3.3.1 AF 0-5
Second succession crisis The second succession crisis in the Latter Day Saint movement occurred after the death of the most of the upper hierarchy of the Church of Jesus Christ of Latter-day Saints in the Fall. Three main branches existed in as many distinct cultural regions: the Tabernacle on Mars, the Extropian Mormons on 44 Nysa (Extropia), and various Brinker colonies further divided by doctrine.
3.3.2 AF 5-10
Council of Fifty
See Wikipedia for its real-world history.
Based on Luna and in Earth orbit
Reclaimers The long-standing Mormon belief in establishing Zion (a utopian association of the righteous), or a New Jerusalem, in America focuses Reclaimer sentiments among Mormon survivors of the fall.
Reconciliation among post-Fall denominations This usually involves access to records held on Mars, funding provided from Extropia through Lunar banks, and negotiating doctrinal disputes.
Extropian Mormons become active in the Underground Railroad. Smuggling indentures from Mars to Extropia, rehabilitation, funding.
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Sometimes the delete key serves best.