Rotate a prism and hold coloured light on matching targets across six compact optics puzzles.
6 puzzles · Mouse, touch or keyboard
Read the controls ↓Press Play to load the game from Joywisp. No external game service is loaded.
Mouse movement or touch dragging aims the prism. Left/right arrows rotate it; hold Shift for finer adjustments. Replay or R resets all six puzzles.
Make small adjustments when both targets are almost lit. Not every angle sends light out of the prism.
Spectra is by Linus Oskar Linhof (Immineal), hosted here under the MIT licence. It is a third-party open-source game, adapted for Joywisp; it is not a Joywisp original or an endorsed partnership.
Joywisp adds keyboard rotation, a touch-friendly Replay button, time-based target holding and graceful audio fallback. The original six puzzles and optics equations are preserved.
Source version: f63a7afa59dc. The adapted source is in Joywisp’s repository.
No progress or scores are saved. Replay, Restart player or leaving the page returns to the first puzzle.
Joywisp privacy · Closing or stopping the player ends its running scripts and sound.
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By Ian ChiaoAllow optional Google Analytics to measure page visits. Your game answers and scores stay here. You can keep playing either way. Privacy details