Call in. A single player mod which plays out at the same time as Gordon and Alyx flees the citadel in Ep1. You take the role of a rebel soldier on a mission to retrieve information regarding the super portal to aid in the building of Dr. Magnussons rocket.
It was great i felt like i actually was playing a short campaign, whilst
there were some words that were written wrong, but as a gamer i liked it and recommend you to try it :)