Brindlefern

Brindlefern is a cosy picture-logic game set in a rainlit greenhouse. Use the numbers on every row and column to find the hidden picture, with two gentle twists: every puzzle is checked so it can be solved by logic alone, with no guessing, and every solved picture comes alive in your album.

Fill cells with a tap, mark empty ones with a cross, or drag to paint a whole line. A built-in solver proves each picture before you see it (a small "logic only" badge says so), and the Hint button teaches: it highlights the row or column that proves one cell and explains it in a sentence. Finished pictures bloom into painted, moving illustrations. Mallow the hedgehog botanist, and her friends Tansy, Pip and Orlo, thank you as your coins restore the greenhouse, the rain garden, the ink room and the lantern loft.

Free demo (play it in your browser above)

The whole first chapter, The Glasshouse: the 5x5 tutorial, 28 pictures at 10x10, its 7 restorations, the daily picture with its 7-day calendar, endless relaxed pictures, the album, three daily quests and your garden journal. Your progress is saved in your browser.

Full game (download)

• 4 chapters, each with its own place to restore: The Glasshouse (10x10), The Rain Garden (15x15), The Ink Room (15x15, two inks) and The Lantern Loft (20x20, three inks)
• 113 pictures: the tutorial plus 112 chapter pictures, drawn from 28 plant, creature and keepsake motifs that are redrawn for each chapter with their own names and shapes
• Colour puzzles with two and three botanical inks (shape markers as well as colour) and three four-panel mosaics that wake into one living painting
• Hints that never lie: 5 to start, 2 more with every solved picture. Relaxed mode shows mistakes at once; Classic mode checks only when you ask and keeps a perfect-solve star
• 28 restorations that change the greenhouse scene, each with its own line from the friend who thanks you
• 34 journal keepsakes, a stats journal, three daily quests, a daily picture that is the same for everyone and a 7-day calendar
• Pinch to zoom and two-finger pan on phones, keyboard play on desktop, undo and redo for whole strokes, and a save that keeps even an unfinished picture
• Plays offline: unzip and open index.html in your browser. Music and sounds are synthesized in the game, with switches in Settings. No ads, no purchases inside the game

Controls

Mouse or touch: tap a cell to fill it, tap again to cross it, drag to paint a straight line; right-click crosses. Pinch or the +/- buttons zoom; two fingers (or Alt-drag, or the wheel) pan.
Keyboard: arrows move the cursor, Space fills, X crosses, Z undoes, Y redoes. P or Esc pauses (opens Settings) and closes any panel.

Built with AI tools (ChatGPT and Claude), then reviewed and polished. Music, sounds and art are generated in code.

Make your own

This game was built with Codex in ChatGPT from our Cosy Nonogram Game Builder prompt on PromptBase, then reviewed and polished for release. Use the same prompt to build a cosy nonogram game with your own theme.