Cyclades
If undead troops that took an island vanish at end of turn, or an undead-only army wins an island, does the player still control it?
The publisher confirmed this on BGG, and the base rulebook says the same about territory markers.
- matagot_contact · Publisher · 2012-09-28
- Cyclades rulebook · Rulebook · Battle
- DoomTurtle · Community · 2012-09-27
- Basiliv · Community · 2014-01-08
Yes. Taking control of an island keeps it until another player lands there, even if every troop on it is later removed, undead or regular. The rulebook's territory-marker rule gives the same result.