This is a remake of the original Half-Life mod The Challenger Deep. This re-designed mod has been in development for more than 7 years. It follows the same storyline as the original.
A VAST improvement over the previous mod, with greater level design and firefights!
The mod is also substantially longer, with great atmosphere and a better focus on the story and just what the scientists in challenger deep were doing at the bottom of the ocean.
It does come with it's hitches, however.
There are frame-rate issues here and there, and the larger open areas make fights overwhelming at times and hard to navigate.
However, it is a great remake of the original.
Give it a go :D