What are they riding? Doesn't move like a typical skateboard. almost looks like the wheels are on casters as they're going straight no matter what direction the board's going.

I saw this being filmed. I was walking home, I think on Montgomery Street. This was going on on the few blocks just south of Broadway. It was pretty quiet otherwise, no one really around. The Financial District is pretty dead after-hours.

Pretty sure they were just skateboards.

too bad more than half of those are pentaminos, not tetraminos.

i feel way too nitpicky when i say this, but i can't deny that i'm always irked when i see an awesome opportunity for a tetris tribute fuck up a major detail like the actual shapes of the pieces.