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 enjoyment for me was Star Wars Squadrons. I wasn’t interested in the slightest but my friend convinced me to buy it full price on release. It was rubbish and I barely touched it. A couple of months later it was available for 98p.
Most value will be either GTA V, MW2 or Monster Hunter World. By far the highest playtime of any of my games.