I think it's important to have scaling challenge because there are players who I feel play 'Dragon Age' for the wonder, story and exploration but wouldn't enjoy getting their butts handed to them. We do still have easy mode - it's not a pure story mode in that there's zero combat, but it's not super-challenging.

The first 'Half-Life' movie treatment pitched to us climaxed with a tearful reunion between enslaved Vortigaunts and their Vortiwives and children. The last one I saw had Black Mesa invaded by a cavalry unit, just so as to feature a scene of bullsquids tearing into armored horses.

The trade-off between speed and image quality is a key constraint of first-person action games, and the job of developing a workable engine involves constantly optimizing both elements. Gamers dream of the day they'll be able to haul their arsenals through three-dimensional environments of photographic clarity, playing 'Myst' with a meat ax.

A game like 'Myst' may be a gorgeous slide show that preserves its beauty at the expense of speed. A game like 'Doom' sacrifices almost everything for action. But the eye soon adjusts: the degree of detail more than adequately conveys infinite claustrophobic labyrinths populated by howling monsters.