Solve geometric puzzles by drawing a single line to divide shapes into identical halves. Progress through chapters with increasing complexity, from area equality to matching seeds and linked marks.






10+ similar games compared and reviewed
Whether you want more options like SpanThread or a completely different take on the same concept, our curated list of 10+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.






Solve geometric puzzles by drawing a single line to divide shapes into identical halves. Progress through chapters with increasing complexity, from area equality to matching seeds and linked marks.









