HL-2 starts alittle slow, but you will not notice becasue of the beautiful views of the surrounding city. The physics engine is amazing, allowing for you to pick up almost anything you see in the world. The game becomes great as you pass the Canals, and get to the actual escape of City 17. This game is amazing, through both game play and visuals. Definetly better than teh origninal, and the best game I have ever played, 10/10.