A life simulation set in the medieval times for a filthy casual where you get to play as their God? Sims medieval. Just slap in mods to make the graphics better.
If there was an actual game like in the manga, it would've been incredibly popular. Having to write stuff out and the AI acknowledge it is crazy tech. The closest I can think of to that (minus the gorgeous graphics) is Scribblenauts (puzzle) or Façade (interactive fiction). Neither of them are like the game in this story.
Not really for casuals but this is if you're into the resource, building, economical, poltiics, religion etc etc. with a lot of thought. If you're into turn-based strategy, try Civilization (you can start out with V but if you're ok with dated graphics, go lower lol). If you're into medieval/historical real-time strategy games, try Age of Empires (we're getting a second one next year, I think with less dated graphics now?). If you want a cross between the two, Rise of Nations.
I realize it's kind of hard to find games with realistic graphics that lets you control the lives of other people. Because those are more open-ended instead of a linear storyline. Roleplaying games are close since there could be a lot of branching topics. So I'll just list down rpg games that give more choices.
If you're into text-heavy role playing games with real-time tactical gameplay-- Pls play Pillars of Eternity and its sequel, Deadfire!!! ;-; And if you're into turn-based tactical gameplay but also a roleplaying game, go for Divinity Original Sin 2. It even has that thing where you click on a character (or in DOS2's case, right click), you can view their profile. They also have a dialogue box except unlike this manga, it's fully voiced. ╮(￣▽￣)╭ The graphics are gorgeous but not 'realistic' lol. Both games have magic in their world. Compelling lore, highly recommend.
I'd also recommend another roleplaying game called Dragon Age Origins. It's got cut scenes and your choices matter. And you can also scroll back to play in a more board-game kinda tactical gameplay (with pause).
If you want to play an actual 'god', but with a story-line and with gorgeous graphics. You can't go wrong with the latest God of War haha. =v=
Tbh, the game in this manga feels like a terrible live service mobile app game. Pay to win. Real-time. Gotta grind to get points. Not fun at all. Graphics are kinda eh. Maybe try Pocket God? You can do whatever you want to your victims.
Uh-
Maybe frostpunk
You doesn't really play as a good but more of a leader that decide things.
The universim is exactly the game you are searching for
Try Majesty first
Relatively easy for beginner.
Honestly, this sounds like the exact type of game I'd like to play, minus the hardcore mode cuz I'm a filthy casual ლ(´ڡ`ლ)
Does anybody have recs for games like this?