Quake 3:
Pretty graphics. Yep. They aren't super realistic but they are pretty and attractive.
It has different map themes and it's an online game. They all look nice and fit.
Plot/Story: ugh... It's a multyplayer game! Frag or be fragged

Gameplay: Competetive gameplay at its best

That didn't work quite well.
My components:
The looks. (graphics basically)
The feel. (atmosphere, style, speed)
The play. (aka gameplay - ugh, many factors here! Netcode, weapon balance, pace of the game, popular 'pro' features...)
The story. (for a sp game mostly. but I like to hear explanations to how did that or this works and alike)
Tweakabilty/Customizability. (You can quake3 to run on 'ugly' graphics or fully customize your hud and/or effects)
Additional points for...
being fun
not boring
strategic
hard
good mature community
I might have forgotten many things.