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.
This mod has one of the most unique atmospheres I have ever seen. Underwater environments are criminally underused in Half-Life mods. Challenger Deep 2 starts slow, you walk around the beautifully created underwater research lab, learn the basics of diving and using oxygen tanks (which this mod uses a lot) and start collecting the optional 20 presents along the way. The presents are scattered around the facility from start to finish, you don’t get a reward for collecting all of them, they are…