People attempting to leave the tavern notice, for about half an hour, there is an impenetrable barrier just outside the door. Then the membrane 'bursts', and the Wessex Arms is... somewhere else.
(Later, we discover that various other people from Grantabrugge and surrounds have been caught up in their own personal bubbles and deposited across this landscape too.)
The landscape is... wilderness. Untamed. Maybe a few signs of local tribes, or are they just troupes of animals?
And for now, magic works; for now, calling on the gods works; but they both feel very far away. Like they need something to anchor them to this new place. Like they need _you_ to anchor them - or to let them fade away...
Meanwhile - someone's got to work out where your next meal is coming from.
Survival Fantasy, in the 'organise farming and hunt dangerous wild beasts' sense. System probably like SimpleTT? or one of the many TT-setting-based system simplification rewrites. Setting simplification comes from gods / elements not represented fading away over the year-long trial run. Probably needs an attached crap miniature Civ game (i.e. an actual downtime system, rather than freetext).