Can we get Hidden servers , this is a old school OG game mode on Half Life 2 . This mod or plugin as you could say was made in 2011 i believe. This mode is very popular and very unique. Hidden is basically like Games like friday the 13th or dead by daylight one ghost (the hidden) on tf2 is know as a spy with unlimited invic i think. But don't worry you can just about see the Hidden. The red team are the swat team who have to take out the hidden. I'm going to link one video to show you how it works and another to show you how fun it is on Half Life 2 .