Not just graphical effects: more NPCs and gameplay entities on screen, better AI, better physics, etc. In terms of trade-offs, 60fps is pretty much always the

Not just graphical effects: more NPCs and gameplay entities on screen, better AI, better physics, etc. In terms of trade-offs, 60fps is pretty much always the first thing to be sacrificed unless it's REALLY important, like in a twitch shooter or racing game. The truth is that for most games 30fps is not a deal-breaker for the majority of people. If even a significant minority of players cared, the intensely focus-test-led games industry would follow.