Clever Crow

Clever Crow takes its idea from the old fable of the thirsty crow and the jar. The water sits too low in a long-necked jar for the bird to reach, so you raise it the only way available: by throwing things in until enough water is displaced to lift the level.

The objects behave differently, and choosing between them is the puzzle. Large stones raise the water efficiently but are too big for a narrow neck. Ice floats and then melts. Cork does very little, and a sponge works against you by soaking water up. Later stages bring in a crosswind that you have to allow for when throwing. Each level has a par, and beating it earns three stars. When you succeed, the crow flies over and takes its drink. The developer lists eight hand-crafted levels and says no two solutions are alike.

Drag from the crow and release to toss an object towards the jar. Aim so that it drops through the neck and into the water. Keep adding objects until the water climbs to the dotted line, which is the height the crow needs. On later stages, allow for the wind when you take aim.

Match the object to the jar. A big stone does the most work but will not pass through a narrow neck, so it suits wider openings. Avoid the sponge where you can, since it soaks up water instead of raising it, and expect little from cork. Ice floats and melts, so do not count on it.

A physics puzzle about raising water by displacement, based on a classic fable. Landscape frame (1280 by 720). Mouse and touch controls. The developer lists eight levels, a par score for three stars and wind on later stages.

Water Flow Happy Glass is another puzzle about getting water to the right height in a glass, done by drawing, and Happy Bucket Challenge has you draw a line so an empty bucket fills with liquid.