
Screenshots

Watch trailer on Steam ↗An Eye for Optical Theory 1666
Perfect Crime Games · Published by Perfect Crime Games · Official site ↗
Positive — 94% positive (16 reviews) · 6 achievements
Last updated 27 Sept 2026
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?
£1.69
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Price history
Adventure, Indie · 2023 · More under £5 games
Navigate the eerie corridors of Newton’s home as you assist him in his groundbreaking optical studies. Experience a chilling blend of adventure and horror set against the backdrop of 17th-century London, where every shadow hides a mystery.
About this game


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.
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7 or higher
- Graphics: DirectX compatible card
- DirectX: Version 9.0
- Storage: 200 MB available space
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Achievement fix
Finally, completionists can attain the ARPH achievement, if they know how.Read full article on Community Announcements (perfectcrimegames)






