We all know what Papers Please is right? It's a prime example of a boring concept does not result in a boring game. Long story short they made a good game about being a border guard. Let me repeat that because I don't believe myself. A FUN GAME ABOUT BEING A BORDER GUARD! Not to mention a complex story with multiple endings. So his would be simple and be able to fit in to most settings. Pre-war easy enough guarding a border (probably the Equestrian border with increasing security due to the increasing zebra threat), post-war guarding a larger settlement such as Tenpony from those who shouldn't get in, post-pip, either one could work.
For those of you who need a reference point on the story here's part 1 DeceasedCrabs (ongoing) LP of the game

Welcome to Equestria cause no trouble

2026649
Sorry I'm on my Kindle so the misspelled words are on me that's also why the video didn't link but this is something I've thought about for a while and now that the group exists thought I'd share. Not for myself to many story's for someone else to do. I'll fix the video when I'm on a real computer but I think I fixed the words. And I mean come on its not a hard concept to think of.

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Well there's still the post-war option.

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I'd read it.