The tunnels are a dangerous place...

Metro 2033 does what Hellgate: London set out to do. It is a fantastic combination of FPS and Survival Horror.

The game is set in post-apocalyptic Russia, mostly within the metro tunnels. You, playing a character names Artyom, must make your way across Russia travelling through the metro tunnels and sometimes on the irradiated surface.

The game is very immersive by reducing the HUD elements and with some fantastic sound assets it really makes you feel like you are in the world. I found myself at times crouched down in real-life, while waiting for an enemy to pass in-game. The lack of a HUD is immersive without being a hindrance, in most cases, all the information you need is pretty much visual. You can see on your gun when ammo is running low and your flash light starts to get dimmer when the battery is running low.

There are some points in the game where you are involved in cut scenes. Usually these really pull you out of the game and are rather jarring but in Metro2033 they are done really well slipping easily from cut scene to gameplay and back again with no loading screens or sudden cuts from the action.
The only loading screens are between levels or missions and are all very short with a diary type entry, from Artyom, at each one.

One major aspect of the game is the fact that "military grade ammo" is currency, while also still being usable ammo. This means that if you find yourself running low on ammo you can "shoot money". This all helps to build the sense that scavenging is a necessity in this world and again helps with the immersion.

I thoroughly enjoyed the game with its dark atmosphere and terrifying sequences and while being scared to continue on at some points, really wanting to progress through the story. The world is fantastically immersive and well thought out and in my opinion well worth a play.