As part of this year's Smissmas celebrations - it's a thing - Team Fortress 2 has received a new way to play it. It's called Mannpower Mode, and it features grappling hooks.
Merry Smissmas, one and all!
Mannpower Mode is very much a beta offering, being used to test the water for a bunch of different mechanics, including the grappling hooks. Because there are grappling hooks in it.
Currently you can play the capture the flag-alike Mannpower on modified versions of the Ctf_foundry and Ctf_gorge maps, and as well as the grappling hooks (did I mention those?) there are a few other tweaks and features added.
Nine power-ups, including strength, resistance, haste and warlock, are currently available, though there are more on the way. Each... well, powers you up, obviously, just in a different way for each of the nine.
There's also a grappling hook! Wait, I said that a couple of times already. But the fact is, grappling hooks are brilliant and should be in all games - so it's great to see them added for all classes in Mannpower Mode.
Accessing it is as simple as this: "Click on Play Multiplayer, enable Play Beta Maps checkbox, and then choose Mannpower Mode."