Updated Jul 21, 2026 · v4.0.0
Solve the daily mystery. Use pure logic to rule out suspects and find the killer
🕵️♂️ Case File #1: The investigation begins. Can you identify the killer? Welcome to Caseoku, the definitive daily logic challenge for aspiring detectives and puzzle lovers. Forget about guessing—in this crime scene, only pure deduction will lead you to the truth. Every day, a new case is opened. Every player around the world receives the exact same mystery, the same suspects, and the same clues. Will you be the fastest to find the culprit? HOW TO PLAY Step into the shoes of a lead investigator. You are presented with a grid representing a crime scene and a series of clues in your detective notebook. Analyze the Clues: "The victim is not in the Kitchen," "Character 3 is two rooms away from the Plant..." Deduce and Rule Out: Use the clues to cross-referenced positions and rooms. Identify the Killer: There is only one possible solution. Use your logic to fix the suspects in their correct places and solve the crime. KEY FEATURES 📅 One Daily Case: A fresh, hand-crafted mystery every single day. No two cases are ever the same. 🔍 Pure Logic, No Luck: This isn’t a game of chance. Every puzzle can be solved through careful deduction and reasoning. 📓 Pro Detective Notebook: An intuitive, specialized interface that allows you to log evidence, mark candidates, and fix final placements. 🧠 Multiple Difficulty Levels: Choose a 6x6 grid for a quick morning brain-teaser or tackle the 8x8 expert boards for a true mental workout. 📱 Optimized for Tablet: Experience the crime scene in high definition. Our UI is specially designed for large screens, making your detective work even more immersive. ☁️ Cloud Sync: Create an account to save your progress, track your stats, and keep your detective record safe across all your devices. THE CASEOKU CHALLENGE Caseoku is inspired by classic logic puzzles like Sudoku and Einstein's Riddle, but with a dark, investigative twist. It’s the perfect ritual for your morning coffee or your nightly unwind. Challenge your friends, compare your times, and climb the ranks of the world's most efficient detectives. The evidence is on the table. The suspects are lined up. All that’s missing is you. Download Caseoku and solve today’s case! 🔎
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