Prism Lock

A vault is sealed with a secret row of glowing prisms, and only your logic can open it! Prism Lock is a code-breaking puzzle: try a combination, read the clues and work out the hidden colours in as few attempts as you can. Choose Easy, Medium or Hard and crack the lock!

How to play Prism Lock

Pick a prism colour from the palette, then tap a slot in the current row, or just tap colours to fill the slots from left to right. On a keyboard press 1–8 to choose a colour, Backspace to remove one and Enter to test the row. Press H for a hint, R to restart and M to mute. After every attempt you get clues: a gold dot means one prism has the right colour in the right place, a silver dot means the right colour in the wrong place. The dots do not say which prism they belong to. Colours can repeat. Crack the code before you run out of attempts: fewer attempts, a faster time and a harder level mean a higher score. Every prism also has its own shape, so colours are easy to tell apart. The game interface is in English. 🔐