You know the Resident Evil 1(the movie) umbrella soldiers that enter the hive ?
Kind of the vibe I want to go with.
So, imagine you are in the otherworld of Silent Hill (monsters, fog, horror, etc) and the entire world is now like that, you are the commander of a group of mercenaries and you can direct them to missions (like the hive of resident evil 1 ) in a RTS manner.
Those mercenaries can be recruited, upgraded, better armed, etc at your base that you will have to periodically defend from horrifying monsters inspired by Silent Hill 1.
Those mercenaries if killed are erased from your roaster.
I imagined a mix between Silent Hill, Darkest Dungeon, and a squad-based RTS game like Door Knockers.
I already made a prototype in 2D, I took a break to get better at 3D modelling and I'm now converting everything to 3D.