
An Eye for Optical Theory 1666
An Eye for Optical Theory 1666 is a short point & click horror adventure game with a focus on atmosphere and narrative. It is the plague year of 1666 and Isaac Newton, in lockdown at his home, has been thinking on the topic of Optics, and planning a series of experiments. Will you help him?
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It is the plague year of 1666. Dear Isaac has been sent home from his Doctoral studies at Trinity College Cambridge back to Mother in Woolsthorpe Manor. Rainbows, prisms and reason have been his sole companions. It has been quite some time since he set foot outside, but of sound mind and body, he has made some significant progress towards solidifying the Corpuscular Theory of light. He will surely confirm his proofs... if he can just finish this morning's experiment - one that will surely prove no challenge at all to a determined man of Science.

Based on a true experiment and featuring several of the writings found in Newton's infamous Waste Book of scientific data and philosophical musings - An Eye for Optical Theory 1666 is a point & click horror adventure game where the player must examine Isaac Newton's surroundings in his room at Woolsthorpe Manor and help guide Isaac to a breakthrough in the field of Optics. It is a short, linear, atmospheric, and narrative focused experience with a retro styled presentation.

- A good hour's worth of narrative driven tension, psychological horror, and humour
- Streamlined point & click puzzle solving gameplay
- Sir Isaac voiced by an AUTHENTIC DOCTOR OF SCIENCE from the REAL UNIVERSITY OF CAMBRIDGE
- Over 100 lines of fully voiced dialogue
- Retro styled graphics and animations reminiscent of the ZX Spectrum
- Relive the golden age of the home microcomputer an 8-colour palette and chip synth soundtrack
- Dynamic soundtrack that responds to the growing sense of threat in the narrative
Some sequences feature flashing colours which could potentially trigger seizures for people with photosensitive epilepsy.
This game features stylized depictions of gore and deals with themes of self harm, mental health, and Oxbridge.
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An Eye for Optical Theory 1666 price history
Lowest tracked price: €1.99 (Jul 7, 2026) · current best: €1.99.
An Eye for Optical Theory 1666 reviews
94% positive reviews all-time.
An Eye for Optical Theory 1666 — frequently asked questions
Where can I buy An Eye for Optical Theory 1666 at the cheapest price?
Right now the cheapest offer for An Eye for Optical Theory 1666 is €1.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
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The lowest price KingsPrice has tracked for An Eye for Optical Theory 1666 is €1.99 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
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System requirements
Minimum
- OS *: Windows 7 or higher
- Graphics: DirectX compatible card
- DirectX: Version 9.0
- Storage: 200 MB available space










