There are so many things to do in this mod that it would easily take months to list them all here. I downloaded the mod, started playing with my new friends from school, and needless to say, it was more than I could handle. As someone who loves to play first-person shooters (FPS) online, I was really excited to find out about Decay as it's free and that I could get in on the action without paying anything. The reason I feel this way is because of the sheer amount of content that can be added to this mod. I've said it enough and I'll say it again: If you love adventure and horror games then you definitely need to download the Decay mod for Half-Life: Blue Label. The beauty of the Survival mode is that it allows you to play the game in a first-person perspective, allowing you to basically have free will and make choices about your actions. You are also equipped with very limited knowledge and understanding of the world around you, as your Mars Station has no internet or communication systems and you must learn to scavenge and survive in this harsh environment. The story behind it is that you are left stranded on Mars with nothing but your clothes and a flashlight.
There are many different versions of this particular mod out there, but the one that I feel is most interesting and probably one of the most fun to play is the " Decay" version. Half-Life: Decay Mod has to be one of the most talked-about and most popular mods on the internet at this present time.