Thanks for your answer!
no the game is not directly inspired by any game in particular even though the original idea was to make a "Papers Please"
Hey, so I was not that far, because it is a Lucas Pope’s game too, and he is specialized in UIs. ;)
so I'm really sorry if they cause confusion.
No worries! I was just pointing it out in case you wanted to correct it, and to be comprehensive. (I should try to be less, as I take too much time reviewing. XD)
if some day you need help with the idea of a "game within a game" I can send you the unity project so you can see how it is inside.
Thanks for the offer! I do not use Unity, but maybe this is transposable; anyway, I may not need it, but if you have a link to the source code (a repository on GitLab — rather than evil Microsoft-owned GitHub—, for example), I might check it. :) Really no need for the moment, do not feel obliged to!
By the way, I have just realized that my question associated to the ghost portrait had been ‘eaten’ by the picture, so I have edited my comment to put it back! In case you could answer. :)