Goal. Combine at least three blocks of the same color and remove them. In Multisquare, the more blocks you clear at once, the more points you get.
The feel. Bright colors, satisfying sounds and smooth movement. It is the kind of game that is easy to start and hard to put down, and that is just what makes it a good stress reliever.
How to score. Build big groups before you clear them, and think about how the board will change after each move. Chain combinations give bonus points, and a timer adds some pressure as the levels get more complex.
It comes from Famobi, and works in the browser on desktop and mobile. Fruit Blocks Match has a similar color-clearing feel.