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.
Shovel knight: bought on sale for maybe 10 dollars and received 4 full games worth of content over the years, and don’t know how many times I’ve played it over several platforms. Bought it a couple more times as well (physical and digital copies). And Spelunky: super cheap, hundreds of hours played, never managed to actually beat it.
Worst was Last of Us: bought a collector’s edition on PS3 because I loved Uncharted, couldn’t force myself to actually finish it. Tried the remaster on ps4 with the same result, although that one was a but more playable