Google and LEGO have launched an insidious plot, er, app that lets users play with virtual LEGO bricks in their web browsers during work hours while deadlines are rapidly approaching.

Google unveiled the productivity-sapping feature, “Build With Chrome,” on Tuesday. Users can stack, rotate and snap a variety of bricks onto a virtual pad, powered by WebGL, a 3D graphics technology for web browsers.

And suppose you’ve lost months building an impossibly elaborate choo choo train? You can publish your creation on this Google map, which is rapidly filling up with monuments to time creatively wasted.