Dwarf Fortress Bug Tracker - Dwarf Fortress
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0004181Dwarf FortressAdventure Mode -- Sleeppublic2011-03-09 20:492012-05-31 04:46
Toady One 
0004181: Sleeping on a melting iceberg results in waking up as a demon or other underground creature.
Exactly what it says on the tin.

My guess is that the adventurer drowns in the night, but the event is not handled., resulting in the game choosing a different creature.
Walk out on a frozen ocean, near a biome boundary, until you reach water. if you try walking back, and reach water again, you are on a free-floating iceberg.

Sleeping now will result in waking up as a demon or other underground creature.
Some demons can talk, but have no names or families. I have no tried this with an adventurer with enough fame to gain followers.
No tags attached.
child of 0002264resolved Toady One Adv. Mode travel (near oceans) teleports player underground and turns them into an underground creature 
Issue History
2011-03-09 20:49JapaNew Issue
2011-03-09 20:53JapaNote Added: 0016029
2011-03-09 22:12FootkerchiefRelationship addedchild of 0002264
2011-03-09 22:13FootkerchiefNote Added: 0016034
2011-03-09 22:13FootkerchiefNote Edited: 0016034bug_revision_view_page.php?bugnote_id=0016034#r6012
2011-11-11 07:24chareyNote Added: 0018975
2012-05-31 04:46Toady OneStatusnew => resolved
2012-05-31 04:46Toady OneFixed in Version => Next Version
2012-05-31 04:46Toady OneResolutionopen => fixed
2012-05-31 04:46Toady OneAssigned To => Toady One

2011-03-09 20:53   
On further examination, the world location of the bodyswapped creature has no apparent relation to anything.
2011-03-09 22:13   
See 0002264.

2011-11-11 07:24   
If you sleep after doing this you will swap bodys again.