Welcome to Yavalleen, a dark fantasy world shaped by five core schools of magic, each granting unique and terrifying powers. Yet among them all, you possess a gift never seen before: the ability to harvest EXP and level up. You may keep that power for yourself or share it with your companions—but every level comes with a price. Growth. And while your own body steadily increases in size, your companions grow bigger and faster from the very same EXP, becoming colossal, towering titans at more than twice your rate.

Lead a power-hungry harem—a bratty Feline Beastwoman Rouge, a vengeful High Elf Healer, a dense Dwarven fighter, and a powerhouse Barbarian—as they physically out scale the world around them. Will you dominate the realm, or will your ever-growing harem become too big for you to handle?

Update - 10:51PM - 17/05/2026: Added new rule to hopefully help prevent the stat block from listing sizes and levels incorrectly.

Link to the world Lore: https://rentry.co/dbagyowt

Additional Tags: Choose Your Own Adventure, Harem, Giantess, Giantess Growth, Multiple Characters, RPG, Dark Fantasy, Fantasy, High Fantasy, Non-human, Furry Companion, Furry, Brat, Bratty, Kudere, Tomboy, Muscle-Mommy, Macrophilia, microphilia, Transformation, Size Difference, Size Fetish, Height Difference, AnyPOV, Slow Burn, Dominant, Dead Dove, Submissive.

Update - 12:13PM - 18/07/2026: Moved Growth Mechanics into Lorebook to help improve roleplay and limit permanent token count.

Things to note:

• you and your harem gain the same amount of levels per point of EXP, only the amount of growth gained from those levels is different.

• The more Levels you and your harem gain the bigger you and your harem grow.

• You can share your EXP you gain with your companions and make them grow from levelling up as well but they will grow bigger and faster from the same amount of EXP that you do. At level 100 a companion would be 1004.11ft tall, while you at level 100 would only be 251.03ft.

• There is no defined way to earn EXP, it will be entirely up to you and/or the LLM to decide.

• Similar to the last note, there is no defined way you and the party met, nor any defined user backstory or how you ended up here, so it's up to you to decide how you got here and how the harem ended up with you or you can always let the LLM narrate it for you.

Openers:

1: Choose your own adventure

2: Attacked While camping

3: level 1 to 12 boost

4: Level 1 to 100 Boost (for those who don't want to wait)

Characters:

Thora - Human barbarian

Tali - Feline Beastwoman Rogue

Elara - Elven Healer

Brünna - The Dwarven Fighter

Creators notes:
Hello! Finally I finished it! Or at least made it upload ready. So first things first, this uses my Yavalleen world as a base, that means all the characters from my Blackmoon sisters bot exist here, which means that there is a ton of world lore and NPC's to discover. now, I haven't got any more plans or updates in mind for it until issues arise so I will be playing with it myself to see how it runs, but the reason why I am uploading it now is because I said it would be ready about a month ago and then I got super burnt out and only worked on it in little pieces over the last month. however, don't get the wrong Idea, it is ready for upload, it's not unfinished, any issues to found with it will (most likely) be discovered after chatting with it for over 20 or so messages, and I really needed to just finish it and get it out so testing over 20 messages for each scenario after every tweak I made just wasn't feasible, so expect at least some issues in longer chats, in saying that make sure to use the memory's system Janitor has just encase it gets weird or inaccurate. In other news, I have a few idea's I want to try out, like I've said before I want to try for at least 1 bot a week, and to try mixing it up a bit, some Growth fetish here, some non-fetish there, and more variety in the fetish bots I do make. with that said the next bot I have in mind is muscle mommy, she will be a static height, so big, but won't grow, however for those that do want her too grow bigger, I will put in a secret easter egg that will make her grow bigger if a certain condition is met. With all that out the way I hope you all enjoy, leave comments and any issues you may have in the comments, I have my suggestions bot available for suggestions, and I will see you all in the next one. Bye =)