Comment by JohnBooty

For me it's the gameplay of this generation that didn't age well.

Developers were:

1. grappling with an entirely new dimension of gameplay

2. investing enormous amounts of engineering work into making 3D world run at all on these systems

And it seems to me that the result was that gameplay the gameplay for this generation at least for action-oriented titles, generally was a big step back from the 16-bit era.

There are certainly some early 3D action titles that still shine for me though. The PSX-based entries in the Tekken series and Metal Gear Solid come to mind.