@Captain Sushi:

If you are using a Windows system, they are already downloaded alongside SOMA and can be found in SOMA's steam folder. By default, it is located here:
C:\Program Files (x86)\Steam\steamapps\common\SOMA

However, if you are using a Mac or Linux system, as far as I know, the modding tools are not available.

How do I even find the HPL3 client or whatever? I have no idea where to start making maps, but I wanna.

@KnuckleFish, No I did not know that the edit files were already there! Awesome, thanks.

Great help man!

Thank you so much for this!

@Romulator: Oh sorry! Thanks for explaining.

@PortalMax: The map is not meant to be "played" in a way. It is for people to get an understanding of how to create custom modifications for SOMA. It comes with a playable map with a readable note as a sort of "side-tutorial" to figure out how to make Readables.

I didn't understand the point of this "little" level with the paper... o_O

@KnuckleFish: Maybe they do know they can use the Level Editor, but they may not know where it is located. This discussion came up on the forums a few times, so for the sake of the unknown where they do not know where such files are, it is told here.

Dosen't everyone know they can just go into the games files and use the level editor to start making a map? Good tutorial though!

Thanks for the positive feedback everyone! If you have any additional problems, feel free to let me know down here and I'll see what I can answer :)

All hail Romulator!!!!!!!!!!

Awesome! Good work.

i cant wait for costom stories!!!!!!!!!!!!!!!1

This is really going to accelerate the output of good custom stories. You're the hero we need.