I've got to give you credit, this is the first time I'm hearing of a situation where blockchain actually serves a purpose in a game. It's a pretty niche scenario, but yeah it would add some value in this case.

So basically if something in a game (item, character, account, etc) needs to persist beyond the game then blockchain could be a solution. You could probably still do this with some kind of traditional database, but maybe blockchain has some technical advantage?