Pavel Hilmon, Konstantin Gudym, and Oleksandr Kremenchuk's Lucky Crab is the sort of simple but sweet physics puzzle coffee breaks were made for. As a crab with a hankering for pearls and the ability to create a magical floating bubble around itself with just a click, you're after three of the shiny white treasures on each level, using objects in the environment to propel yourself around and avoid hazards. Just click to interact! Clicking on the crab will create a bubble that will cause it to float upwards until it hits something, and clicking the crab again will pop it. Other items, like weird... anemone... urn... thingies will propel you forward with a burst of air when clicked if you're in front of them, while spiny urchins should be avoided at all costs.
Though it isn't anything we haven't seen before in one incarnation or another, Lucky Crab's sunny presentation and carefully crafted levels make it just the sort of lightly challenging and fun diversion the genre is best at. Largely, the physics themselves are reliable without being too demanding, making this one unlikely to frustrate kids, and the new obstacles and objects added as you progress spice things up with a bit of variety. Lucky Crab's biggest problem, however, might be that the timing is a bit too finicky in places, making you wish you could hit a key to en-bubble your crab instead of having to scramble click on it.
Fortunately, since it lacks a timer to pressure you, Lucky Crab allows you go at your own pace, with no restrictions like limited bubbles to really annoy. It won't be the sort of game you'll come back to again and again, but it's crafted with care and makes for simple fun with a gentle difficulty curve that's just the ticket when you want entertainment without the teeth.