妹の部屋から脱出 -美少女×本格推理ミステリー

妹の部屋から脱出 -美少女×本格推理ミステリー

GOLDEN DOG, K.K.

Available on Google Play
10,000+ installsFreeGAME STRATEGY

Updated Jun 4, 2026 · v2.0.0

CompareView on Google Play
Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5
Screenshot 6
Screenshot 7
Screenshot 8
Screenshot 9
Screenshot 10
Screenshot 11
Screenshot 12
Screenshot 13
Screenshot 14
Screenshot 15

A beautiful girl and a locked room for a full-fledged mystery! Tap the contradictions to uncover the culprit in this puzzle-solving mystery. Many players have expressed their感動 (deep emotion) at the touching ending. For fans of free escape, mystery, and detective games.

🔍 "Big brother! Come to my room!" With that one sentence from his little sister, a "locked-room mystery" begins—with five beautiful girls. Despite the cute illustrations, the game is a serious, full-fledged mystery. Find the "contradictions" hidden in the testimonies and uncover the truth of the case in this puzzle-solving mystery 🕵️ Solve the mysteries hidden in each of the girls' rooms and escape. The more you solve the mysteries, the closer you get to the "heartbreaking truth" that the little sister left for her big brother. 💖 You'll start by being drawn in by the illustrations, and then be captivated by the story. This is a full-fledged mystery game that has received numerous comments such as "I cried at the ending" and "The scenario was beyond my expectations." ━━━━━━━━━━ 🎮 Recommended for people who: ━━━━━━━━━━ ・Like mystery games/puzzle-solving games ・Want to use their brains with escape games and mysteries ・Like adventure novel games with cute girl illustrations ・Want to enjoy a full-fledged mystery for free in their spare time ━━━━━━━━━━ 🕵️ How to Play ━━━━━━━━━━ ・Choose a deduction and tap to expose contradictory testimonies ・Solve all the mysteries in the room to move on to the next case/story ・Use hints when you're stuck. Anyone can enjoy feeling like a great detective ━━━━━━━━━━ ✨ Recommended Points ━━━━━━━━━━ 🆓 A completely free puzzle-solving mystery! A full-fledged mystery that will appeal to escape game and mystery lovers 🎨 The illustrations of the cute girl characters are just adorable. Alone with a girl in a locked room… 😭 A well-crafted scenario. Many users commented that the emotionally moving and tear-jerking ending "exceeded expectations." ⏱️ Playable episode by episode, perfect for killing time during free moments. ━━━━━━━━━━ 📁 Included Case Files (Partial List) ━━━━━━━━━━ • Rice Balls and Sibling Rivalry • Heartbreak and the Left-Behind Will • Miku the Hostess's Pouch • Tragedy While Her Husband Was Away • The Witness on the Balcony • The Express Train Murder Case • The Case Surrounding a High School Girl • A Couple's Argument and Kidnapping • A Trip to Atami with Neighbor Kouta • A Certain Town with a Bad Crime Zone • A Goranger Fan Meeting …and many other diverse mystery puzzles! ━━━━━━━━━━ A free mystery escape game packed with beautiful girls, authentic mystery, and puzzle-solving! 🔍 Why did my sister act this way...? Unravel the truth with your deductions. *Feel free to live-stream or provide commentary.

Version
2.0.0
Updated
Jun 4, 2026
Content Rating
Teen
Installs
10,000+
Developer
GOLDEN DOG, K.K.
Website
http://goldendog.co.jp/
Email
contact@goldendog.co.jp
In-app purchases
No

This app isn't currently appearing in any tracked top charts.

Rating breakdown

5
0
4
0
3
0
2
0
1
0