Info: this Tetris game was inspired by a Game Development workshop on Falsy Values conference. Thanks to Damian Wielgosik (@varjs) and Paweł Czerski (@czerskip) for organizing the conference, Kornel Lesiński (@pornelski) and Peter van der Zee (@kuvos) for the workshop and to Juriy Zaytsev (@kangax) for the Fabric.js library.
Falsy Values Fabric Tetris is based on the workshop sources, uses Fabris.js library and have fancy Falsy Values design.
Check the GitHub repo for the source code, or my blog post (sorry, only in polish).