Creativity often arises from having limited tools or abilities and having to make do with what you have. For example, some old audio chips back in the day (the 80s) had little or no polyphonic capabilities, therefore programmers would have to have them play rapid arpeggiated sequences instead of chords to give the illusion of polyphony. This practically gave rise to whole new school of composition and is still being done today in some decidedly retro styled games and the 8-bit music genre.
I like my games to be immersive. Immersion is not just brought about by realistic graphics, AI or whatever other singular mechanic you care to mention but all too often, sadly, it is route one for developers with the pockets to make it happen. The other route is great gameplay and thankfully we're seeing a renaissance in indie developers who are realizing this and providing it. Pretty much out of necessity ,as far as I can tell, because EA sure as hell were not going to do it.
Here's some interesting thoughts on the matter. (Skip to 2:38)