Glass Joy: Draw the Flow

Soft hand-painted watercolor physics puzzle game. Draw smooth black lines on the screen to guide the flowing ink liquid from the top pipeline into the U-shaped cup below. Watch real liquid physical simulation: fluid splashes, flows and bounces off wooden platforms. The top ink meter limits your drawing ink supply, plan your route wisely to avoid wasting ink. Each level has different obstacle layouts of wooden planks, design unique tracks to collect enough liquid and fill the cup to pass. Earn star rewards after clearing stages, use hint function by watching ads to solve tricky levels. Fresh watercolor countryside background, gentle pastoral art style, relaxing brain teaser suitable for all ages!