The Hidden is a Half-Life 2 MP TC in which one player is virtually invisible and plays against everyone else. The Hidden is only equipped with a knife and pipe bomb, but he can also leap large distances, run really fast, throw heavy objects, and hang on to walls and ceilings. Everyone else in the game gets to choose from a few automatic guns, a couple of pistols, and some extras. The game can be pretty creepy, especially if the Hidden is good (they can carry around bodies and hang them up). The play is typically a bit slower than other MP mods, but the change is refreshing. I hadn't seen anyone mention the mod here before, and they recently came out with a nice new beta. Just a heads up!
"Flowers and a landscape were the only attractions here. And so, as there was no good reason for coming, nobody came."