LUNADUN: LUNATIC DUNGEON
You choose a favorite and walk beside them. But those you left behind — where do they go while you're gone? LUNADUN: LUNATIC DUNGEON is an emotional adventure where choices shape the fate of four characters. 'The ones you loved, the ones you ignored — you don't get to walk away from either of them.'
Do you have a favorite character?
Picking the one that speaks to you, going on adventures together, having conversations — that's one of the best parts of any game.
But have you ever wondered: what happens to the characters who never got to be your favorite? How do they feel during all that time you weren't there? When you next open the game, do you really think they'll greet you with a smile — just like your favorite always does?
LUNADUN: LUNATIC DUNGEON is an adventure game built around that very question. Your choices determine the fate of every character.
――Their fates are mirror images of each other. One person's salvation is another person's ruin.
"The ones you showed kindness to, the ones you turned away — you don't get to walk away from any of them."
About This Game
3 Members, 5 Days
Only three can enter the dungeon. Each day, you choose who stays behind — and that choice shapes everything that follows. Who do you bring with you? Who do you leave alone?
Affection System
Your words and actions shift how each character feels about you. But here's the catch: raising one person's affection always lowers another's. There is no path where everyone gets to be happy.
Going Lunatic
When affection drops too far, something inside a character begins to break — an irreversible change known as "going Lunatic." This isn't a bad ending. It's the ending your choices made.
Multiple Endings
Five days of decisions lead to a branching web of outcomes. And if the conditions align… you might just witness salvation and ruin arrive at the very same moment.
Characters
Galuo "Your Childhood Friend" / "The Childhood Friend Someone Wanted"
A hotheaded young man who charges headlong into a dangerous dungeon, driven by a single-minded desire to save a mutual friend. Beneath the surface, however, he is slowly consumed by the compulsion that he must never stop living up to everyone's expectations.
Albie "An Ordinary Scout" / "A Scout Who Could Never Be Special"
A earnest young man who joins the party despite his doubts about the mission. Neglected by his father in childhood, he came to believe he has no worth of his own — and has held himself together ever since by making himself replaceable.
Megalis "A Wandering Monster" / "A Monster Who Survived Anyway"
A mysterious monster woman who leads a caravan. She has endured the harshest of conditions — stripped of dignity, armed with nothing but her wits. Even the tragedies she has suffered, she claims, are no one's fault but her own.
Mamakona "The Daughter of Fate"
A childhood friend waiting for you at the end of a long journey, at the very edge of the story. What meaning will her presence bring to all the choices and responsibilities you've accumulated along the way…?
You
You, in this game. A fleeting form, stripped of everything.
Content Warning
This game contains content that some players may find disturbing or uncomfortable.
If any of the following themes are difficult for you, please use your own discretion before playing.
Violence
Self-harm
Violence and neglect toward children
Discrimination and exclusion toward Monsters (fictional beings)
Estimated Play Time
Demo Version
Prologue through Day 1 (in-game time). Approximately 15–20 minutes.
Early Access Version (Planned)
Average play time per run: approximately 1.5 hours
Under certain conditions, both the salvation and destruction endings can be unlocked in a single run.
Streaming & Let's Play Guidelines
We welcome streaming and video content of LUNADUN: LUNATIC DUNGEON! Both commercial and non-commercial use is permitted.
Please include the following information in your video description:
Game title (LUNADUN: LUNATIC DUNGEON)
Steam store page URL
Copyright notice (©Team BONA 2026)
OK
Streaming and video uploads to any platform (Let's plays, clips, commentary, etc. — all formats welcome)
Monetization and commercial use
Not OK
Content that violates public morality (e.g. discriminatory, excessively violent, or sexual content)
Content that intentionally damages the reputation of this game or its development team
