Happy Shapes is an interesting hyper-casual arcade game reminiscent of Lucky Glass, in which you have to fill containers by guessing the volume of water. Click "Play" to get started. At the top of the playing field is a crane. Below on the platform appears a container in the form of a car, a mug, a house. Between them is a structure for draining water. Click on the faucet to open it. Estimate by eye how much liquid you need to pour out in order to clearly fill the container to the measure. If you pour more and the water overflows, or it doesn't fill up a bit, you lose. The game will be an excellent training for the eye.