About
The original is a mobile puzzle game called Loop (listed here as Infinity Loop), where players rotate tiles on a grid until none have loose, unconnected ends. ttyloop is a terminal-based clone of the mobile tile-rotation puzzle game Loop, played entirely with box-drawing characters in a terminal window and controllable via hjkl or the arrow keys.
How it differs from the original
The main difference is platform — this is a keyboard-driven, text-only terminal version rendered with box-drawing characters, rather than the original's mobile touchscreen interface.
Getting started
Controls are hjkl or the arrow keys to move, U/I to rotate a tile, N to start a new puzzle, C to open configuration, and Ctrl+C to quit; the author recommends the Iosevka font, though any font with standard box-drawing characters should work.