[ATTENTION - THIS SOLUTION DOES NOT WORK WITH CURRENT PATCHES AS OF AUGUST 2024]

This solution for getting the very notorious achievement "vs the world" in The Jackbox Party Pack 8 is a much easier solution than other online guides I've found. It does not require any use of your browser, any noteworthy processing power and is almost plug and play.

Here is a step-by-step guide on how to get the achievement:

1. Open The Jack Box Party Pack 8 and open The Poll Mine. When the lobby is open and waiting for people to join, take note of the room code. Keep the lobby open. Make sure that audience is turned on in the settings and that there are no limits to how many people can join.
2. Dowload Python.
2.1 On Windows 11, open powershell (you can do this by going to the windows search bar and write powershell and clicking on it when windows have found it) and enter python. Then press enter. The windows store-page for python should pop up and you can install python from there. If this does not work. Download python through your browser (python.org) and install it.
2.2 On Mac/Linux, download Python 3.10 through your browser (python.org) and install it.
3. Download this program from github. The link to that is https://github.com/Naxaes/jackbox-pollmine-vs-the-world.
4. Extract the files to wherever.
5. Open the folder.
6. Right click on the file called main.py.
7. Choose "Open with" and select python (for me this is Python 3.10).
7.1 On Mac, this is replaced by python launcher 3
8. The program will run and a request in a command prompt-window will pop up.
9. Enter your room-code and press enter.
10. After a few moments, Jackbox will register a thousand people to have joined the audience and the achievement should pop up.

That's it! This solution is very easy, takes no skill and works on Windows 11, Mac and Linux.

If you run into any issues, please consult the README-file in the folder that you downloaded.
If you get stuck in a neverending loading-screen in The Jackbox Party Pack 8 after having messed up and not getting this achievement by following this guide, you might have been given a timeout from the server, I ran into this while testing the code. Wait a few hours, make sure you follow each step properly before trying again. If you still run into any big issues, leave a comment on this guide and we will get back to you.

Credit to Naxaes for writing the program. He noticed my frustration and wrote this program in about an hour, what a hero!