A free, daily deduction puzzle game. Sort items by discovering the hidden metric.

Spectra is a fresh take on deduction puzzles that combines deductive reasoning with the satisfaction of daily brain teasers. Each puzzle presents seemingly random items that you must sort from highest to lowest based on a hidden metric. The twist? The sorting criteria is never revealed upfront. Through strategic guessing and careful analysis of color-coded feedback, you uncover both the correct order and the underlying pattern – whether it's atomic numbers, release years, population sizes, or something completely unexpected. With a changing number of attempts (based on the difficulty) to crack each puzzle, Spectra rewards both logical thinking and creative lateral connections. A new puzzle drops daily, making it the perfect morning ritual for puzzle enthusiasts who crave something more cerebral than word games.

Jakob Löhnertz is an independent game developer and software engineer from Germany. Spectra is a passion project born from a love of deduction puzzles and the desire to create a daily brain teaser that has an interesting twist.