[codetiger]

Came here to post the same thing. Procedural level generation has been there for a while and it does not need advanced AI. Probably if the same thing was done for games like Call of Duty or Medal of Honour type games, it would be more impressive.

[mtlmtlmtlmtl]

Minecraft is a notable example of 3D procedural generation. It's so much more complicated than Spelunky though. But definitely impressive.

[dpflan]

And cheaper (compared to the upfront cost to get to the point of GPT doing this versus classic methods).

[taeric]

Isn't that the secret, though? Sufficiently advanced procedurally generated content is indistinguishable from AI.

[codetiger]

Agreed, my argument is only on "sufficiently advanced". Mario is super simple to create a AI for this purpose. And the levels look very unhuman generated. :)