Recurr

You get one tiny grid - nine cells. A cell can be empty, solid ink, or self: a shrunken copy of the entire mark. Plant a self inside your mark and the whole picture appears inside itself, and inside that, and inside that - forever. Your job: sculpt the recursion until it matches the target fractal.

Two gestures are the whole game. Tap plants self (or quotes a second grid). Hold inverts: an empty cell becomes solid ink, a mark becomes its negative - filled where it was empty, empty where it was filled, at every scale at once.

• 83 handcrafted marks in 8 chapters - from a solid block to Sierpiński classics, two grids that dream each other, triangle worlds, negatives, and boolean fusions (AND / OR / XOR of two fractals)
• The truth lens: see which points are provably ink, provably empty - or never resolve, glowing amber. Classic fractals are all skeleton
• Free play: build anything, fuse two grids, and share any find as a link - the URL is the puzzle. Random mode deals endless marks to reverse-engineer
• No fail state: unlimited undo, no timers, a par count if you like chasing elegance
• Solving dives the camera into a self cell - one stamp deep lands exactly where it started
• One thumb on a phone, mouse + keyboard on desktop; works offline once loaded; light and dark themes

Free, no ads, no accounts, no analytics. Progress saves in your browser.