I use spreadsheets for lots of games for various reasons but generally because the UI of many games is "klunky" and often doesn't provide enough information without requiring tons of clicks, or even worse, only shows info once and you have to remember it for the next 100 hours of play-time. I generally don't play a game through to the end in one sitting, I'll put it down for months and revisit and have no idea where I left off. Here's a small list of recent spreadsheets...

- Divinity Original Sin to track skills i've assigned to which characters as well as discovered recipes.

- Dyson Sphere Program to keep track of which star systems and planets i've visited (there are tons) to show roughly how much of each resource is there, sun/wind energy stats, etc. and whether i've exploited the resources there or not.

- Game Dev Tycoon to keep track of what types of games i released and the resulting ratings (which determine payouts). It's a very arbitrary system and i feel only through trial-and-error can you discover what games will get good reviews. It's borderline cheating but i figured since i did it myself, it's only half-cheating ;)

- Mount and Blade to keep track of which kings, queens and princesses i have interacted with and their likes/dislikes for when i communicate with them. Necessary because once you start a dialog there's no way out until you finish the dialog. And there's absolutely no way i can remember 300+ names and their standing with me, plus i play very irregularly (still Early Access and things change constantly). Yes you can click on royalty names and it'll tell you the standing, but it's just so much easier to have a spreadsheet open on another monitor which you can glance at from time to time.

- Rogalia for recipes, rent, combat, conversion times, selling rates...