About This Demo

Please Note: As the game will undergo major adjustments based on player feedback, demo save files will not carry over to the final release. Thank you for your understanding!

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Her in the Abyss is a real-time synchronous narrative game.

Through a device, you forge a cross-temporal link with C804. Over 72 real-time hours, your dialogues, choices and judgments will guide her deep into the forbidden zone—to reclaim her lost memories, her companion… and her fate. Every word you send decides her path.

Her in the Abyss is not a passive story in which you stand idly by.

It is a space opera: amid a thousand clues, you find one glimmer of hope.

• Game time progresses in full real-time sync—whether you are online or not alters C804’s behavior.

• She will not pause even if you stay silent: she acts on her own and even makes mistakes.

• Every message feels like talking to a real friend—this is a story only for you and her.

• The game features massive dialogue branches: some are casual exchanges, others decide life or death.

• Your attitude shapes C804’s trust, dependence and how often she communicates with you.

• Your decisions lead to multiple endings (with completely unique final dialogues).

Remember: she remembers every word you say.

• You and she hold only limited pieces of information—all clues come from her descriptions and your judgments.Why is the “Iron Curtain” a forbidden zone? How did the cross-temporal link form?

• The truth is hidden within a tangled web of clues.

• The game supports background running, with real life and the game progressing in parallel.

• You can interact with her during work breaks or idle moments.

• The story continues even when you’re offline. To pause, fully exit the game; C804 will wait for your return.

[Add to Wishlist! Forge your one-of-a-kind story with her.]