Spare Key: Share House Mystery

Crystl Labs Adventure Contains ads

Move into Ivy House. Find the spare key, catch the liars, learn who fell.

Price: Free; No in-app purchases
Updated: Oct 23; 2026 · v1.0.1

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About Spare Key: Share House Mystery

You move into Ivy House, a city share house with six housemates and one very strict house manager. That night, something heavy hits the bottom of the outside stairs. In the morning, Sayo is dead, the police call it a fall, and the spare key is missing from its hook.

Spare Key is a mystery visual novel in six episodes. Every episode brings a new incident in the house, and every one of them pulls on the same thread: what really happened on the stairs, and what happened to Rin, the girl who lived in your room before you.

HOW IT PLAYS
Search the house for clues: drag around each room and tap anything that looks wrong. Talk to your housemates; your choices stay with them. When someone's story doesn't add up, take them on in a testimony: press each line for more, then present the evidence that breaks it. Wrong guesses cost one of your three keys. Each episode ends with a house meeting, where you put the night back in order and name who did it.

WHAT'S INSIDE
• Six episodes, eighteen chapters, one season-long secret
• Six housemates, each hiding something
• Investigations, testimonies, timelines and accusations
• Rin's diary: a hidden page to find at the end of every episode
• Gossip Night: a new little whodunit in the house every day
• Text box styles to collect
• Play offline. No account needed

Free to play, with optional rewarded ads for hints, a second chance, double coins and diary pages, and occasional ads between chapters. All characters are fictional adults.

Six housemates. One spare key. Someone opened the door that night.

What’s new

Version 1.0.1 · Updated October 23, 2026

Fixes: the testimony buttons fit on screen in Portuguese, the search hint no longer shows through the text box, and long titles fit.

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App details

Spare Key: Share House Mystery is a free Adventure app for Android with 0+ installs on Google Play. It was released on October 22, 2026 and last updated on October 23, 2026. It's developed by Crystl Labs. It requires Android 7.0 or later. The app contains ads.

Category: Adventure
Installs: 0+
In-app purchases: No
Ads: Contains ads
Version: 1.0.1
Requires Android: 7.0
Content rating: Everyone 10+
Released: October 22, 2026
Last updated: October 23, 2026
Developer: Crystl Labs

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