Though short, I'd have to say it's a great mini-sequel.

User Rating: 9 | Half-Life 2: Episode One PC
I’ve always loved half-life, especially half life 2, classics both of them, and episode one really kept the great name of HL2.
The first thing I noticed that I never got sick of, is the amount of emotion and interaction Alyx created for the game. This made the storyline one of my favorites, and it gave the game the little kick it needed.
Another thing was the art in the game. The different corridors and alleyways were all unique and beautiful. This defiantly showed when you exit the underground while walking up the stairs and see the citadel with a color show of sunset like skies.
The graphics I won’t touch on, never really thought they were the greatest, and Alyx always seemed to look too old when the lighting had a bad reflection on her face. Also no big changes from HL2 graphics, but it ran smooth on my machine so no major complaints.
And finally, yes okay it WAS short, beat it in 4 hours the first time…but for $20 it’s worth the pay.