Phase 1
Obsession before product
Arbiyanto Wijaya spent over a year writing almost every day with AI, mostly fan stories built on anime, games, and light novels. That daily habit is where Lunafic comes from.
About Lunafic
A private space to play inside the story
Lunafic began with Arbi writing almost every day with AI, playing inside stories from anime and games. That was the initial idea: you play one character, the AI plays everyone else.
The product took a detour and became a writing tool for professional writers. It taught us something on the way: the fun part was never the writing tools. It was playing inside a story.
V4 builds on what we made in both versions. You play inside worlds, a Playable World someone else built or a Private world only you can open, on a writing engine first built for professional fiction and now tuned for roleplay. Worlds show their pictures when the big moments come, every screen was redrawn for the phone first, and your story never trains AI. It exists for fun.
Official Program Member
Lunafic is an official member of the NVIDIA Inception Program, supporting startups revolutionizing storytelling and generative AI.
From V1 to V4
The story so far
From playing inside stories, to a writing tool for professionals, and back to playing again.
Phase 2
A wild idea, a real partner
Arbi and Naufal Badalsyafiq brainstormed multiple ventures together. Lunafic stood out as the most ambitious and the most alive.
Phase 3
V1The first version
Turn-based character roleplay. You step into a character, the AI plays the rest of the cast. The idea was right, but the experience was too thin: a plain text box, weak memory, no real editor.
Phase 4
V2The writing tool detour
Talks with professional teams showed the same writing pain at a bigger scale, so Lunafic became a writing tool for professional writers. That phase built the engine: a true editor, deep character profiles, chapters, branching, export. Professionals did not stay, but the engine is what V4 runs on today.
Phase 5
V3Back to the initial idea
V3 combines V1 and V2: playing inside a story, on top of the professional writing engine. You play your character, the AI plays everyone else in their own voice and language. Your story saves as chapters, every line is a save point, and it stays private until you publish it.
Phase 6
V4NowPlay their world, or your own
V4 keeps the engine and redraws every screen for the phone first. Worlds now come in two kinds. A Playable World is built by someone else and you play it, like co-op in a game, you play in their world and you do not redraw their map. A Private world is yours alone, and you can change the world itself. In both you can edit any line of your story like a book. Authors add pictures for the big moments, and the AI shows the right one when that moment happens.
The V4 philosophy
What we believe
A private space
Your story is yours. Zero stories are used for AI training, and nothing goes public unless you publish it.
An otaku space
Built by otaku, for otaku. Anime and games first, but not only Japanese: Korean manhwa, K-pop, western series, and local pop culture all belong here. Whatever world you love, you can step into it.
Local pop culture, understood
We are the same team behind Arxist.id, a creator community in Indonesia. Fandom is different in every country, and we build with that understanding, from local payment methods to the way fans talk about the worlds they love.
Background
Lunafic was a professional writing tool first
Before Lunafic turned into roleplay, it was a writing tool for novelists and screenwriters. We kept the engine from that time and built the roleplay on top of it. That is why your roleplay reads like a story and saves as chapters you can edit.
What the writing tool left behind
Editor
The whole story is an editor that looks like a normal roleplay. When the AI gets a name wrong, you tap the line and fix the word instead of paying for a retry.
Narration
The narration stays in the moment with your character. It does not jump ahead to tell you a detail will matter later. We measured 78,658 paragraphs of AI narration in October 2026, and 3 jumped ahead.
Chapters and wiki
Your story is saved as chapters like a book. Every character has a wiki page that says how they talk and act, and the AI reads it before it writes.
MC Mode
The writing tool had the AI write the main character. MC Mode turned that around. The AI plays everyone else and never writes your character's words, thoughts, or actions.
Questions people ask
Why was Lunafic a writing tool before it became roleplay?
Lunafic started as a roleplay prototype in October 2025, then spent December 2025 to June 2026 as a professional writing tool for novelists and screenwriters. That time built the engine Lunafic still runs on, the editor where every line can be changed, chapters, a wiki page for every character, and narration written like real fiction. Professionals did not stay, and the AI wrote the main character, which roleplayers do not want. So in July 2026 Lunafic went back to roleplay and kept the engine. MC Mode became the default, so the AI plays everyone else and never your character. Before any of this, our founder roleplayed with raw AI models for more than 3,000 hours and managed the memory by hand, and Lunafic memory is that routine done for you.
Related features
MC ModeThe AI never writes your character's dialogue, thoughts, or actions.Story memoryThe AI keeps the whole story, and you can open the memory and fix it.Dual language dialogueCharacters speak their own language, with the translation under each line.Playable WorldsRoles, starting choices, and endings, so you always know what to do next.Scene picturesThe world shows its own picture when a big moment happens.Writing engineFirst built for professional fiction, now tuned for roleplay.
Pick a world and start playing
A growing library of worlds you can step into. You play your character, the AI plays everyone else.
No credit card required · Free tier available