Creating a Wildspace System - Homebrew

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With the latest release of Spelljammer: Adventures in Space (2022) a lot of people are excited to start spelljamming through the Astral Sea and Wildspace… but the sourcebook only presents two Wildspace systems with no information on creating your own. As a lover of all things weird, Spelljammer, and Planescape - I can’t let that stand. Below are my rules for creating a Wildspace system, and then I provide my own system I created from these rules, Taliaspace, that you are free to steal for your own tables.

Check the attached PDFs for how to create a Wildspace system.

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Creating Taliaspace

To show off how to use the Wildspace system creator above, I am going to take my world of Talia and create a Wildspace system for all to use. I also have a drawing of Taliaspace, though I also went ahead and made a prettier version you can find below for you to use as opposed to my horrible drawing.

Taliaspace, 2022 by Stephen Bandstra

Step 1. Determine the Center

I already know what the center of my Taliaspace is, which is a sun, and that will probably be true for most people’s homebrew worlds - unless they want to get crazy and say it is a giant portal to the Plane of Fire. But when creating new Wildspace systems, you can create odd systems where life is just a bit weirder.

Step 2. Planetary Paths

Rolling the d10, I got 8 Planetary Paths for my world. I’m pretty excited about that as that gives me lots of places that I can include in my system in the future.

Step 3. Determine Planets

In order, I rolled a 20 (Weird), 19 (Portal to the Elemental Chaos), 4 (Size C planet, water), 6 (Size D planet, earth), 2 (Size A planet, fire), 15 (Cluster of Moons, 3), 12 (Asteroid Belt), and 9 (Size G planet, earth)

So I have a good selection of planets for adventuring on as well as some other fantasy elements. I’m especially curious as to what I am going to come up with for my Weird roll right next to my Primary Center.

Step 4. Planetary Distance

Now that I have my Planetary Paths figured out, its now time to determine how far they are away from each and how much distance is in Taliaspace that spelljammers have to jam through.

Primary Center -> 100 million miles to Weird -> 20 million miles to Portal to Elemental Chaos -> 30 million miles to Size C planet, water -> 80 million miles to Size D planet, earth -> 140 million miles to Size A planet, fire -> 200 million miles to Cluster of Moons, 3 -> 30 million miles to Asteroid Belt -> 90 million miles to Size G planet, earth

This gives me a total 690 million miles from my Primary Center to my last Planetary Path, the Size G planet, earth. In addition, I rolled another d20 and got a 12, so it is 120 million miles to go from the Astral Sea to the Size G planet, earth - and if you want to get to the Primary Center, it is a total of 810 million miles - which will be 8.1 days of spelljamming!

Step 5. System Special Qualities

Rolling my die, I got: (5) It takes twice as long to travel away from the Primary Center as it does to travel towards it.

I feel bad for anyone trying to leave the greatest Wildspace sphere in the Astral Sea, since it’s going to take them quite a bit of time to actually leave. Hopefully, they have some good air on board or things are going to get foul.

Step 6. Planetary Path Special Qualities

I didn’t bother to roll for every planet, but rather just a couple. What I made sure to do was make sure that my Size D planet, earth (which will be Talia) has three moons that circle it. In addition, I rolled for my last planet, Size G planet, earth, and got that it had permanently fouled air, which is not good for visitors to that planet.

Though, I have determined what my Weird 1st Planetary Path is going to be - an amorphous blog of black oil that has congealed into a singular slime ball.

Step 7. Location of Each Planet

After that, I’ve gone ahead and figured out the placement for each planet on their Planetary Path by rolling a d12. This means that this will be their general location anytime my party comes or goes from this system, though one can always reroll this or move planets about for whatever makes sense for them and their game.

Step 8. System Name

As I’ve already said a few times, the name of my system is Taliaspace - because the main planet here is known as Talia and you add space after it. Though, you can also use a descriptor for the system, like Doom or Wonderful, to name it after.

Step 9. Planetary Names

I am now going to go through and name all of my planets using the provided charts (of course, I won’t be rolling for Talia or for the sun).

Weird - 1st Path - Name: Ouanah Slime
Portal to Elemental Chaos - 2nd Path - Name: Dimhda
Size C planet, water - 3rd Path - Name: Joenveis
Size D planet, earth - 4th Path - Name: Talia
Size A planet, fire - 5th Path - Name: Blyad
Cluster of Moons, 3 - 6th Path - Name: Leandr Cluster
Asteroid Belt - 7th Path - Name: Cornow Asteroid Belt
Size G planet, earth - 8th Path - Name: Diotius

So now, we have a Wildspace system ready for the party to explore and cause all sorts of mayhem and havoc. If you end up making a Wildspace system with this, I’d love for you to share it below for others to use as well!

Taliaspace, 2022 by Stephen Bandstra