The 1.18 Snapshot 2 and 3 don't want to show up. The experimental snapshot 1 showed up, so I checked the folder of 1, 2, and 3 in versions, and they are all the exact same. I restarted my launcher. (check images)
MCL-19295
1.18 Experimental Snapshot 2 And 3 Won't Show Up
Resolved
Invalid
0
They are NOT intended to be launcher snapshots. But here's how you download them.
1. Go to https://www.minecraft.net/en-us/article/new-world-generation-java-available-testing, then scroll down until you see the green download link. It should download a .zip file named somthing along the lines of "1.18_Experimental_3"
2. Open the .zip you downloaded.
3. select the folder inside the zip that has the same name, then copy it.
4. go to your .minecraft/versions folder. If you don't already know how to get to that, open the game, go to options > resource packs > then click open resource pack folder, then go up a folder, and search for the folder named versions.
5. Paste your copied folder in said versions folder.
6. Make sure your game and launcher are both closed
7. open the launcher
8. go to installations, and make sure that "modded" is the only checked one
9. create a new installation, and select the version as 1.18 experimental.
10. add a seperate directory! Snapshots and ESPECIALLY experimental snapshots are not stable and can corrupt files, including worlds, settings, and more.
11. To create a new installation, go to the folder icon in your installation-creating menu, then right click and select create new folder. Name the folder whatever you want, as long as it doesn't have the same name as another folder.
12. open the game, adjust your settings, and you're good to go.