Crossing Zero

Crossing Zero is a six-level circular logic puzzle. Each letter has two points joined by a colored chord. Swap neighboring points until no chords cross. Every level has a verified solution within its move limit.

Controls: On mouse or touch, tap one dot and then a neighboring dot. On keyboard, Left/Right selects a dot, Space swaps it with its right neighbor, U undoes, and R restarts. Use Next level after a clear. After the sixth level, Play again starts over.

Made during the AnimAI Jack 122 jam. Generative AI assisted with the original JavaScript, wording, and CSS/SVG visuals. The developer reviewed and tested all six levels. No external libraries, assets, fonts, sound, paid tools, account, or network requests are used by the game. The HTML5 ZIP includes the full source and README.