Fun Game
Response from developer
Thank you so much for the amazing feedback! 🫶🏻 We’re thrilled that you enjoyed the stories, challenging questions, and the investigation experience. More cases are on the way, so stay tuned, detective! 🕵️♀️🔍

Uncover the truth by examining a simulated phone's messages, photos, and data. Connect clues on an evidence board and accuse the killer in this interactive detective story. Your first case is free to play.
2.2
July 29, 2026
• Browse every case from the case page and jump straight in • Immersive message sounds — with a mute button in the chat • Haptic feedback on key moments • See your current Redstring Pass plan in Settings • Fixes and performance improvements
MoreUnlock every case. Billed weekly.
$39.99
All Cases — Lifetime
Every case forever. One-time.
Thank you so much for the amazing feedback! 🫶🏻 We’re thrilled that you enjoyed the stories, challenging questions, and the investigation experience. More cases are on the way, so stay tuned, detective! 🕵️♀️🔍
Cold Case Tracer: Redstring is an interactive detective story where you investigate a simulated phone to uncover the truth behind a crime. You'll examine messages, photos, and other data to piece together clues and identify the culprit.
Yes, your first case, "The Kessler File," is completely free and playable without any paywalls. Additional cases can be unlocked with the Redstring Pass.
The Redstring Pass offers weekly ($4.99), annual ($29.99), and a lifetime ($39.99) option to unlock all cases. Subscriptions renew automatically unless cancelled 24 hours before the current period ends.
No, Cold Case Tracer: Redstring does not contain advertisements. The game is free to start and offers additional content through optional purchases.
At launch, there are 10 cases available, covering various crimes across multiple European cities. More cases are planned for future updates.
The game's description indicates that progress is saved per case, suggesting it can be played without a constant internet connection. However, specific offline playability is not explicitly detailed.
Cold Case Tracer: Redstring is fully playable in 8 languages, making it accessible to a global audience interested in interactive detective stories.
If you get stuck, Cold Case Tracer: Redstring offers up to three escalating hints per question. These hints guide you toward the evidence without revealing the direct answer, and the game's smart answer-matching understands your input.