I've heard about Stratis being friendly to game developers using C#, but I was thinking more about microtransactions than tracking things like ingame items or non-buyable currencies. You're right, the immutable nature of blockchain technology could be great for this.
I had a tiny little bit of Stratis already, but I think it might be a good idea to buy some more while it's low. I want to get on the train while it's at the station rather than chasing it up the track!