Svellera, The Expanding Lands (Fatfur DnD system)

Hello there, my name is Loko K.O. It’s my first time involved on these forums so apologies if I’m out of the loop on proper forum etiquette. I wanted to come to you today to provide you with a first look at a fatfur DND game I’ve been working on (still WIP).

This is a system I call “Svellera: The Expanding Lands.” It’s a custom expansion system made for Dungeons and Dragons 5th Edition which allows you and your friends/players to experience a variety of growth themes in a tabletop rpg setting.

Now, if you’ve already taken a look at the above hyperlink, you may have some questions, which I will be answering below. As I mentioned in Q3, I’m going to be taking community feedback, so PLEASE give me your thoughts on Svellera if you get the chance to look over it. Yes, the spells ARE coming, I ask for your patience.

~ Loko K.O.

UPDATE 2/19/24: Some small progress updates for you all. First, you may have noticed I pushed the Q&A down to the replies, which I did in order to clean up things here and streamline stuff for updates. Second, I had the chance last night to run a one-shot with some interested parties. One person was familiar with the system, and two were unfamiliar. From the sounds of everything it seems like the system works very well and has a solid balance of available expansion options. However, I did receive a valid piece of feedback that it seems expanding lacks enough incentive, and I do agree to an extent that I could give players a bit more of a reason to want to make themselves big.

Onto a bit more of a bigger part to this update; those three people I ran the game with last night, I actually had them test out the Expansionist (custom class for this system) in order to get some necessary feedback. From the sounds of things, it so far has a working core system that could use some tweaks. I got some critiques such as giving access to just a bit more in option/opportunities, though the idea behind the class seems to work solid and didn’t leave anyone without something they could consistently do.

I’ll be sure to update you all as developments continue.


Really have to find a session for one of these modules myself one of these days, hard to do being overseas and all but people always seem to have a lot of fun. Seems like an enjoyable system your working on though and I hope you keep improving it!


Sounds pretty wicked! Can’t wait for it to be finished and released! Already running a Campaign with expansion based themes myself and this sounds like a nice addition to the campaign and future ones!

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So what do you think of skunks, vultures, and pigs?

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If you do end up using it, please do feel free to give me your thoughts. I’m looking to update this system for a while based on community feedback (plus I still have things I need to include that are currently missing).

I decided, for sake of keeping things a little cleaned up, I would move the Q&A down here to the comments. Here were the example questions and answers I had originally left.

Now, if you’ve already taken a look at the above hyperlink, you may have some questions, which I will be answering below.

Q1: “Wait, isn’t this just (other system)?”
A1: Svellera was made as a “combined to fix things” kind of system. I’ve been playing fatfur-themed DnD stuff with my friends for around a year or so, and I’ve found that many people (myself included) have issues with a lot of different bit and pieces that began to frustrate me personally. I and others found ExpanDnD WAY too huge to approach in a way which could be handled naturally (i.e. it felt like a chore, like I had to study a whole new system when I just wanted to make characters big). However, when I tried the Bella Ventus system there was a limitless number of complaints regarding the limits and punishments of that expansion system. Over time, I developed what became Svellera as a method of bridging the gap between simple and complex, and many people I’ve played with using this system had a lot of fun.

Q2: “Are you trying to suggest your system is superior?” / “Are you trying to one-up other people’s hard work?”
A2: Not at all! Svellera didn’t come from a place of hatred against other DnD systems, nor did I create it because I wanted to push people away from other systems they like. As I’m sure you could see, Svellera could not exist without the framework left behind by creators such as Storymaker and RDS. These creators took the important first step in creating a logical expansion system, and if it weren’t for their work which I could study and use, there never would have been a Svellera system to begin with. Svellera exists because I wanted to combine the best parts of other systems I liked into one compact form that could be curated in a way me and my friends liked most. All credits for the people I borrowed from or took inspiration from will be mentioned in the final version of the Svellera document, however for right now I believe the majority should all be referenced towards the end.

Q3: “How much work is there left to do?”
A3: Currently, I have a roadmap of how I wish to complete this:

  1. Translate the spells I have listed into the full document. I have them in a separate google doc but it will take time to format them properly.
  2. Publish the custom class: The Expansionist.
  3. Balance Svellera based on community feedback.
  4. Adapt further spells. Currently I only have spells up to 4th level, due to it being connected to the Expansionist class.
    5: Balance the Expansionist class based on community feedback.
    6: Post the beta of the first module made exclusively for Svellera. I’m working with some DnD friends of mine to make a one-shot module which will show off how this expansion system works for those who want a simple introduction to the system.
    7: Balance the module based on community feedback.
    8: Release the module.
    9: Make final cleanup adjustments to everything based on feedback.

Q4: “Will Svellera be sold or free?”
A4: Svellera is, and forever will be, a free system that anyone can download and use. I will NEVER place Svellera behind any form of paywall. Not only would that be (in a way) stealing from others to make a profit, but it feels morally wrong to sell something which was created from a desire to collaborate and explore fun ideas. While the one-shot module discussed above is subject to potential sale, the Svellera system will remain an eternally free system that anyone can use.

Q5: “What is this about a custom class?”
A5: In time, I will be releasing details about a custom class for the Svellera system which I call “The Expansionist.” The idea is more or less a class made for the purpose of showing off the Svellera system through use of growth mechanics. More details will be provided in the future. Currently, the Expansionist class is ALSO planned to be a free document you can download at any time.

Do ya have a discord? Because I would love to both help, give ideas, and join a game

At the moment I’m already running a campaign using this expansion system, and don’t really want to start adding even more people. However you can join my personal discord to give comments and suggestions.