Isekai RPG | I built an RPG game inspired by DnD and various anime sources

Hey guys, I made a cool RPG game as a passion project when I was bored, and I’ve just been working on it for several months now and am pretty pleased with out how it turned out. If you got questions, I’ll answer!

If any of you wanna try my game, here it is:

Also had my bot write up a little thread about my game.

I built this for me, so like it’s not perfect, but I like it and I’m getting a few reviews which is really nice. Got feedback about it being too easy to created a hard mode that utilizes python dice rolls.

meta commands let you influence the story get quests, anything you want.

the memory system is pretty cool, conceptual memory threads, one for core knowledge, skills, name, background, etc

then various threads to cover short term and other interactions

You can build a town into a nation, or run a shop, be in the adventurers guild, or create your own guild.

And I think the combat is pretty fun too.

:star2: Discover the Ultimate Text-Based RPG Adventure: Isekai RPG :star2:

Hello, fellow creators and RPG enthusiasts!

I’ve been working on something I think you’ll love: a dynamic, immersive, text-based RPG called Vantiel Isekai RPG. This isn’t your typical fantasy story—it’s a fully interactive, choice-driven experience that combines rich storytelling, adaptive gameplay, and a living, breathing world powered by GPT’s capabilities.

What Makes Vantiel Isekai RPG So Cool?

  1. Dynamic Storytelling
    Every decision you make in Vantiel matters. Your choices shape the world, your relationships, and even the very fabric of reality. With second-person narration, sensory immersion, and layered moral dilemmas, the game pulls you in and doesn’t let go.

  2. Customizable Gameplay

    • Start your journey with a unique reincarnation experience, where your Earthly past shapes your life in Vantiel.
    • Choose from traditional RPG classes, unlock advanced prestige classes, and evolve your character through narrative milestones.
    • Go “Hard Mode” for a dice-heavy challenge or stick to standard play for a more relaxed experience.
  3. A Reactive World

    • Monsters evolve in response to player actions.
    • NPCs remember your choices, and companions react dynamically based on your interactions.
    • Procedurally generated settings ensure every playthrough feels unique.
  4. Innovative Dice Systems
    Transparent dice rolls with modifiers keep the gameplay fair and immersive, whether you’re crafting, fighting, or persuading a faction to join your cause. Rolls are tied to clear DCs and incorporate environmental and status effects for depth.

  5. Rich Worldbuilding
    Vantiel features deep lore, adaptive ecosystems, and political landscapes that shift as you introduce Earthly knowledge like printing presses or sanitation.


The Memory System: A Game-Changer

One of the standout features of Vantiel is its memory thread system. Here’s why it’s exciting (and how you can use it in your own projects):

  • Core Memory Threads: Permanent, unchanging details like player character data, world lore, and key relationships are always retained, ensuring continuity.
  • Dynamic Threads: Tracks evolving world states, NPC affinities, and branching narratives. These threads adapt in real-time, allowing Vantiel to feel alive.
  • Prioritization and Recall: Older or less relevant data is summarized for efficiency, while critical details remain at the forefront. Players can always ask the system to recall past events.

This system ensures that Vantiel stays immersive and consistent across multiple sessions without losing sight of what matters most to the player.


Why Test It Out?

I need your feedback! Whether you’re a fellow creator looking to explore how memory systems enhance storytelling or an RPG fan excited about immersive narratives, your input will help me make Vantiel even better.

By testing this RPG, you can:

  • Experience cutting-edge GPT capabilities in action.
  • See how a modular memory system brings a game world to life.
  • Inspire ideas for your own projects.

How to Try It

Reply here or DM me if you’re interested! I’ll provide you with access and a quick-start guide. Let’s shape Vantiel together, and I’m more than happy to discuss the mechanics and memory systems in-depth.


Let’s collaborate and create something truly epic. I can’t wait to hear your thoughts! :blush:

—I am in the process of turning it into an API based development, but that is still in dev and I’m struggling hard with getting it to understand my game. Chat GPT custom gpt knowledgebase works way better for now.

I built this game by creating 10 markdown files detailing the world thoroughly,

The .md Files

  1. 01_Game_Foundations.md: Core narrative, reincarnation processes, character creation guidelines, and thematic depth.
  2. 02_Character_Progression.md: Attributes, skills (F–S, levels 1–10), leveling mechanics, Great Sage interaction, and character evolution.
  3. 03_World_and_Setting.md: Expanded lore on Vantiel’s geography, factions, social structures, and how player actions influence cultural and technological shifts.
  4. 04_Companions_and_NPCs.md: Trust systems, companion quests, NPC routines, and how relationships impact gameplay.
  5. 05_Economy_Survival_Inventory.md: Updated survival mechanics, inventory management, and economic systems with in-depth daily reports.
  6. 06_Combat_and_Encounters.md: Refined combat systems, adaptive foes, multi-phase boss mechanics, and environmental tactics.
  7. 07_Reference_Integration.md: D&D/Tensura-inspired elements, reimagined to fit Vantiel’s lore seamlessly.
  8. 08_AI_Cheat_Sheet.md: Expanded command guidelines, consistency rules, and no-spoiler protocols.
  9. 09_Classes_and_Guidelines: Updated classes and character-building pathways.
  10. 10_Beasts_and_Monsters: Catalog of creatures with attributes and lore-fitting integration.

Using this and the conceptual memory threads it was able to fully remember most of my choices. Maybe this can help some of you guys, ask my gpt any questions I don’t mind if other rpg games take this memory concept.

I built another GPT that will help you create md files such as these based on uploaded source material. Haven’t tested yet if you would like the link, please PM me for it :slight_smile:

I would be interested in trying it. I was just now for a ai based system in this direction.

Hey! I would love to play with this, I hate the subscription model that chat gpt uses, is there any other way for me to access your bot?
I have no experience with coding, but Im an avid rpg lover so I can atleast give feedback

Hey thank you for reaching out, unfortunately I have not completed the web app version yet, and it’s going to take a long time for me to turn it into an app. Chatgpt just handles the game very well, you shouldn’t need a subscription to use it but you’ll get limited chats.

When I do make an app, I’ll have to charge some sort of monthly fee as the API can get expensive to use (with lots of people anyway). The custom gpt doesn’t use the API so it doesn’t cost me any money to run.

I’m planning on making a site similar to fables.gg. But it’s kind of an ambitious project. I made this lil Isekai game for me to play because no game existed that did what I wanted to do. As gpt evolves and it’s memory system is enhanced I believe these interactive story games will become very popular.

I’m excited for it to be able to make quality pictures within the text.

Anyways, sorry I can’t be of more help to you.

1 Like

Tbh I’m interested in making one for locally. But I’m still new. I’ve already install the Web UI but with deepseek. Can you give me some resources for this adventure?