The idea is to introduce a second coastal Capital city with statues surrounding it to the
game, with the twist that it can be beseiged by Deep Ones ( fish like humanoid monsters ).
In its passive phase it will be identical in function to The Main
City, Merchant stalls, player stalls, etc.
But in its active phase City guards and player funded defenses fight off sea creatures similar
to HP lovecraft Deep Ones.
Passive Phase
Players can support the town by donating silver or resources to earn a special currency.
Players can trade said currency for other resources ( like Expedition only Items )
or Deep One Costume Pieces.
Players can also pray to surrounding statues ( borrowing the Expedition mechanic ) to
hasten/intensify an invasion.
Active Phase
Players earn the special currency by defeating Deep Ones in combat, either looting directly
or through a quest scroll.
Players with a full set of the Deep One costume may instead fight for the Deep Ones and attack
the town defenders and any supporting players ( earning currency in the process )
Wearing the full set is required to join the Deep Ones side and WILL cause madness when worn
unless a threshold of Perennial Philosophy is met ( and/or the player is a witch ).
Active Phase ends when the town bell ( or appropriate landmark) is destroyed or Boss Deep One is
slain ( possibly random number of Deep Ones slain ).
City/Defenders win, everything goes back to normal until the next siege.
Deep Ones/Attackers win, a staging area outside the city is set up to retake the city, and crab on
a spike ( or new similar defense item ) begin to appear around the town set up by the Deep Ones.
If the Deep Ones occupy the city, players wearing Deep One Costume may enter the city and contribute
to the cities defenses.
I feel like this would be a good way to give players something new to do in game that would build on
mechanics already in game. The only possible challenge to adding this kind of content would possibly
be the items and unintended interactions, but its really just building on whats already in game
function wise.
Of Course if Deep Ones is a step to far in lore then possibly Natives ( or European Mercenaries )
attacking a more inland City, with the insanity defenses replaced by more conventional defenses.