Using of a blockchain for gaming would be a stupid way to use it, just like dick pics and fart sounds in the Bitcoin blockchain. Nothing of those truly need censorship-resistance.
In most cases that's true. However, Doom's predecessor, Wolfenstein 3D, was banned in Germany for a fairly significant length of time (for obvious reasons). So there may be some fringe cases where censorship resistance could be a legitimate need. But a blockchain remains an incredibly inefficient way to do it. Particularly when filesharing technology has come such a long way and is purpose-built for that task.