PRISM: Light Puzzle

Tap. The light bends.

PRISM is a light puzzle with exactly one rule. Tap a piece and it turns 90 degrees; the beam instantly finds a new path. Light every crystal in the color it asks for and the board is solved.

No tutorial needed. One tap is the whole game.


■ Buy once. That's it.

No ads. No in-app purchases. No sign-up, no sign-in.
One purchase opens all 240 puzzles from the start.

No internet connection required. It works on a plane, underground, anywhere with no signal. Your progress is stored only on this device and is never sent anywhere.

Under 5 MB. There is not a single image file in the app. Every beam and shape is drawn in code.


■ Six chapters, 240 logic puzzles

I. Reflect: a mirror turns light by 90 degrees
II. Split: a half-silvered mirror passes light and reflects it at the same time
III. Disperse: a prism splits white light into red, green and blue
IV. Mix: two beams meeting at one crystal make a new color
V. Refine: a filter keeps only the component you want
VI. Converge: everything you have learned meets on one board

Every board has exactly one solution. Nothing is solved by luck, and if you are stuck there is always a reason.


■ Real optics

The angle of reflection, dispersion through a prism, and additive color mixing are real physics. Each chapter opens a principle card that shows the board before and after a single tap, side by side, written so a child can follow it.

Where the game simplifies real physics, we say so.


■ Four languages

Korean, English, Japanese and Simplified Chinese. Follows your device language, or pick one in Settings.


■ Made to be playable by anyone

· You do not need to tell colors apart. Every crystal carries a shape marker
· Text size can be set to normal, large or extra large
· Turning on Reduce Motion cuts down the effects
· A tap that misses a piece by a little still rotates the nearest one


A puzzle game you play quietly, without watching ads or waiting for a purchase prompt.

Contact: prism@adriven.co