Quake update 4 is out, timed to coincide with the kick-off of this year's QuakeCon, and it adds the classic capture the flag mod Threewave CTF to the modern version of the old-school FPS game. Originally published in 1996, Threewave CTF was an instant hit, and helped popularise a game mode that would eventually be included in all the big multiplayer shooters for decades to come.
Threewave CTF uses standard capture the flag rules: your job is to invade the enemy's base, take their flag, and return it to your base - while preventing the opposing team from doing the same. Threewave CTF added a few distinctively Quake elements in the form of power-up runes that provide damage resistance, speed boosts, or other buffs to the holder.
The mod also introduced a new traversal tool for Quake in the form of the grappling hook. Replacing the axe melee weapon, the grappling hook could be used to zip around a map by attaching to walls and quickly yanking the player in that direction. You can also use it on other players, and it'll damage them - but it's worth bearing in mind that this leaves you completely open to return fire from the grappled player.
It's not a big stretch to imagine that the meathook found in Doom Eternal had its origins in Threewave CTF's grappling hook.
The version of Threewave CTF included in Quake remaster has nine of the original maps, each with enhanced lighting and fog effects, so they look better than ever. The update also fixes a few bugs, like fiends' arms clipping through floors when they die, and the ability to auto-aim debug variables in multiplayer.
The update is free for the new Steam version of Quake.