Does it live up to expectations? Read on to find out. You're one lucky dog, Gordon.
The visuals are quite amazing for the franchise, and build upon the Source engine with HDR and special facial lighting which even moreso bring characters like Alyx to life. Rather than making the graphics technically gleaming, they're focused on providing a believable natural effect.
HDR isn't the only addition brought forth by Lost Coast, the Commentary system is also in Episode One, with plenty of juicy information on the development process. It's advisable to play through the game atleast once before using the commentary system, as it makes you invulnerable to damage.
As usual, there's plenty of humorous dialog and notable speeches by Dr. Kleiner. While the episode is original and contains completely new maps, expect to play through the familiar settings set by Half-Life 2, such as the squares of City 17 in turmoil and the infamous Citadel. There's also one new enemy, a suicide bombing Zombine, or a Combine soldier that's been turned with the help of a headcrab.
With the introduction of Episodic content, Episode One is drastically shorter than Half-Life 2, but it also in theory means more content with less waiting. If you're a seasoned shooter fan, expect to play through in 2-3 hours, if you're relatively new or want to take everything in, it can last 4-6 hours.
At around $20, Episode One is a steal for Half-Life fans.