What's an adventure? What's a Quest?

[OB1]

This is roughly how it breaks down for Zelda and Metroid:

Zelda:

60 % Adventure (exploration, puzzle-solving)
39 % Action
1 % RPG

Metroid:

50 % Adventure
50 % Action

Zelda is mostly an adventure game, and Metroid is as much of an adventure game as it is an action game. I don't need to call them action-adventure games if I don't want to, just as I don't need to call Tony Hawk and extreme sports game (I can simply call it a sports game). Grim Fandango is a graphic adventure game, but you can just call it an adventure game to keep things simple.