Including DLC, micro transaction purchases, etc. If you got a game for free, please also list your non-infinite next best.
For me it’s Team Fortress 2. $100 total spent on hats and the Orange Box back in the day, 4200 hours plus of fun, meaning 2.3¢ AUD per hour. Initially I thought DotA2 would be my best but it turns out I’ve spent a lot more money in that game than I thought…
My worst is God of War: Ragnarok. Bought it full price for $95 AUD, only played 2 hours and hated it, meaning $47.50 AUD per hour.
Least - Hogwarts legacy: I bought it on sale mostly to “own the libs.” My personality did a 180° in that same year so never opened the game again.
The 2-3 hours I spent felt like one huge tutorial, dialogue options just didn’t matter, and also game didn’t run great.
Most - Blade and sorcery: Modded the hell out of it daily. Also there was an update some time ago that doubled the native content.