Half-Life segmented in 20 minutes 41 seconds


Presenting Half-Life 21.

Starting back in the summer of 2010, the estimated time for this run was thought to be roughly 27 minutes. However, after almost four years of painstaking planning, theorycrafting and execution, we have arrived at our final time, smashing all of our wildest expectations.

Not only do we owe this new world-record time to all the new tricks we’ve discovered, the new routes we’ve found and the new ways we’ve
learned to manipulate the game. A lot of the improvement from the first estimation and the previous world record (29 minutes, 41 seconds)
comes from the very hard work and countless hours put into perfecting each and every segment, no matter how short or trivial. This run has
truly been an endurance test for everyone involved, and we’re extremely happy to finally be able to share it with you.

Enjoy, Half-Life in 20 minutes, 41 seconds!

Technical details:

  • This run sets the new world record for a segmented speedrun of Half-Life on Hard difficulty with an improvement of 9 minutes. (29:41 -> 20:41).
  • Runners, in order of total amount of segments: quadrazid, CRASH FORT, coolkid, pineapple, YaLTeR, Spider-Waffle, FELip.
  • The total amount of segments is 317, 249 of which are shorter than 5 seconds.
  • This run is heavily scripted using the in-game console, the most widely used scripts are jump spam, duck spam, 180* turn for gauss boost and precise use-key actions.
  • To use the better demo functionality and the support of higher FPS values in the Steam version, a mod have been made to restore the gameplay to the way it was before the anti-bhop patch back in 2001. The mod also features a lot of new HUD elements to aid speedrunning. Read more and download here.

Extra thanks to:
ripieces, for making an exclusive HLAE update
Oasiz, for making a VDub script
OddYsseus, for encoding and hosting service
YaLTeR, for creating Bunnymod Pro
rofi, for New Gauge Half-Life client

The videos are available with both 60 and 120 fps. 120fps is recommended only for users with more than 60hz, preferably 120hz. The files may also be heavy for old computers to play properly.
I strongly recommend Media Player Classic for the 120fps verison, it will play fine. VLC however will not.

For details about chapters, maps, segments, players and times, there is a detailed spreadsheet.

1280x720 60fps 8235kbps 1.35GB

800x450 60fps 3309kbps 565MB

1280x720 120fps 8099kbps 1.29GB

800x450 120fps 4128kbps 696MB




About time! This will be interesting.


I can’t wait


updated stop alias to avoid gaps at high speeds

bind v “reset;pause1;load 3”

bind e stopp

alias pause1 “host_framerate 0.000000001;sensitivity 0;bind mouse2 pause0”
alias pause0 “record temp;host_framerate 0;sensitivity 1.9;bind mouse2 +attack2” //SENS&BIND
alias stopp “fps_max 100;pausable 1;sensitivity 0;pause;w4;stop;pause1;bind mouse2 pause0”


can someone try to make seg 34 without landing on the box outside?
unlike the current 35q.save does. not sure if possible but it would save 0.25s

with or without landing on box, it’s still 50%+ faster on c1a2, the first office complex map :>


I don’t think I’ve ever been this excited about a run. It’s been awhile since I’ve been excited by any run to be honest! :smiley:


Same. The GoldSource sub-forum is the only one I read, and this is pretty much the only thread I care about.


Then why did you force HL2 speedrun to have 2 childboards instead of one, if you’re not going to use it D:

Interesting to see this as well.


At the time it seemed like a good idea, and at the time I was actually interested in the re-run. Motivation is fickle.


Yeah, this.


why rofi don’t take any segment of this run?


rofi isn’t very active or interested anymore. Apart from seeing the new tricks and the final result of course.


Seg 37 is finally done. Improved .79s over my first set of demos.
So now we need all help we could get with this random barney at segment 38.

See attachment for save and a good attempt by pineapple.

When leaving room, we need 2 grenades, 2 rounds and 21 armor.


what’s the best time anyone got yet? and what’s the goal?


As 37 is just finished there’s no probable demo yet. But Spider-Waffle got about 12.0s door-to-door. Pineapple got about 13,7.

Somethin like Spider did, but build some speed out the door.


Our goal is to finish the game with the shortest time possible.


-.- that’s not what i meant.
I meant the goal as to what time to get on the segment, I mean if someone ever got 13 seconds, the goal would be to get under 12, so I know which demos are worth showing and which are not.


Fixed that for you then!


nvm I’ll just find out by myself i guess…