What are the differences between Half Life 2 and Half Life 2 Episode 1?

Question

The Half Life 2 trilogy is very similar to Half Life 1. Half Life 2 is more open and cinematic, whereas it's more closed and claustrophobic.

Hagrid P Hazard · Accepted Answer

The Half Life 2 trilogy is very similar to Half Life 1. Half Life 2 is more open and cinematic, whereas it's more closed and claustrophobic.