This blog contains lessons learned by me through the process of mapping for Single Player games, primarily, Half Life 2, Portal and Left 4 Dead (yes Left 4 Dead can be considered a single player game).
This blog's focus is on the player experience. To hell with the nuts and bolts of the level editor, the entities, models and brushes. This blog is about coming up with a final result when it's all put together.
How does the player feel about the experience?