No in-game intro

Not to be confused with non-linear story where introduction can happen sometime later, though they're capable of lacking an intro as well.

This is not about lack of information along the way from which player can piece together the answers. Nor lack of intro cinematic or similar, any introductory content (such as prologue), qualifies for intro.

Limitations:
* Sports, puzzle, simulation, and such should not generally be included.
* Games completely lacking a story should not be included.