[musicale]

> including the willingness and ability to go through days of grinding for very small rewards

when you put it that way, I feel like players of grindy f2p/mmo/etc. games could possibly be successful in embarking on grindy IRL activities like exercise programs, learning to play a musical instrument, studying for the bar exam, ...

I guess the trick would be to add randomized rewards and collectables to keep them (us?) hooked.

Ring Fit Adventure actually has a collectable aspect, as well as level grinding, component item farming, and non-uniform rewards. Leetcode and duolingo are gamified to a lesser degree, and I'm not sure it works as well, though maybe it doesn't need to. Duolingo's non-uniform gem rewards feel more annoying than exciting.