Goog gods, I’ve actually read about this stuff ages ago.
It’s a classic discussion in roleplaying games (the real thing, eh, not the pansy ass computer RPGs, or MMORPGs for that matter) whereby you’ll have your free form roleplaying where your GM won’t really bother you will rules all that much (the paidia side),
and the very structured “on rails”, rules heavy games will be more toward the ludus side.
Funny how it’s all the same, eh?
Wish the lecturers here knew about gaming (as in, non computer gaming).