Xcom is a game about defending from an alien invasion
Ore, Twintails ni Narimasu (english title: Gonna be the Twin-Tail!!) , is an anime about defending from an alien invasion.
The only differences is that in "Ore, Twintails ni Narimasu", you are trying to preserve certain fetish (in this case the existence of "twintail".), from being sucked out by the alien invaders (fetish being a tasty lifeforce).
So why not mix the two concept into an Xcom like game, where you have squad of "superheros" defending earth from those who would seek to destroy your fetish?
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terror missions :~ Where aliens tries to capture and suck out the fetish out of masses of people in large cities.-- mofosyne, Apr 25 2015 xcom https://en.wikipedia.org/wiki/X-COM [mofosyne, Apr 25 2015] Gonna be the Twin-Tail!! https://en.wikipedi..._be_the_Twin-Tail!! [mofosyne, Apr 25 2015] Some kind bud, eh?-- the porpoise, Apr 25 2015 Why would it bother you though? If you stop being turned on by something, you no longer like it, so you can't have a desire to go back and live in the time when you had that desire. It's gone and you won't miss it, because missing it would - well, it's incoherent. Unless you mean the object?-- nineteenthly, Apr 25 2015 But what if your favourite fetish is having your favourite fetish sucked out by alien invaders? Footnote: I am the proud owner of an original version of UFO: Enemy Unknown. I still have a functioning Amiga to play it on too. Although both are now locked away in a dark & secret place along with a list of my favourite fetishes. [nervously wanders off to check that they are still securely locked away]-- DrBob, Apr 26 2015 random, halfbakery