🖼️ Nonograms online — solve solo or race your friends

In a nonogram the numbers along the edges tell you how many cells to fill in each row and column, and the filled cells slowly turn into a picture. The bank holds 81 images across four grid sizes, each with its own clock: 5×5 gives you five minutes, 10×10 fifteen, 15×15 half an hour and 20×20 a full forty-five. The big grid and the colour puzzles come with the subscription.

Solve alone or turn it into a race on a shared puzzle for up to four players: rivals show up as a progress percentage only, never as a revealed picture, so there is nothing to copy. There are no bots here — your opponent is always a real person. The server validates every fill: a wrong cell costs one of your three lives plus a thirty-second penalty, while the final score grows with your speed and the lives you kept. Three “reveal a cell” hints are free.

There is a level editor too: draw the grid with your finger, turn a photo into a puzzle (the image is processed on your own device and never uploaded), or ask the AI for pixel art from a text description. The server checks that your level has exactly one solution; saving your own puzzles is a premium feature, but playing other people’s levels is free for everyone — straight from a shared link or from the published list.