It's all about stacking (well, duh) squares and triangles, each equipped with a smiley face, in the hope they don't topple off the screen.
It's a very simple game so here's hoping the developer adds some pizzazz somehow. "This is a puzzle game in which players stack various blocks and objects to build tall, stable structures," goes the ESRB rating, where they give it an 'E' for Everyone rating.
"The shapes are personified with facial expressions and sound effects, and they occasionally cry out upon falling from a high distance." Madness! Of course you could always play the game right now, totally for free, on this lovely website.