The Command Line Murders
Solve a murder case by searching text files from the terminal
The Command Line Murders makes you a detective in Terminal City. A murder has happened, and the clues sit in a folder of plain text files. You start by reading the instructions file, then you search, filter and read the other files from the terminal until you can name the killer.
Free · No login · Terminal · Beginner
About The Command Line Murders
The game teaches everyday shell commands for finding and reading text, such as grep and cat, and it rewards careful searching. It suits beginners who want to get comfortable on the command line. A cheatsheet and hint files help when you get stuck.
You clone the GitHub repository or download it as a zip, then play in any terminal. It is free and works offline. The rules ask you not to open the case files in a text editor.
On Breakpoint since 23 Oct 2026.