Doesn't seem to work on Chrome on OSX. I see a sort of LineRider-esque game screen, with an equation Y=(some math) at the bottom middle, and a button that just says "click here!" at the bottom right. There's also a mountain and a gear at upper right and upper left respectively.

Clicking on the button that says "click here!" has no effect.

Clicking on the equation allows me to change it; this changes the slope of the ski slope. I think what's supposed to happen here is that when you change the slope under the sled to be non-horizontal, the sled should start moving — sliding down the slope you just created, toward the second snowman. But that doesn't happen in Chrome.

Clicking on the mountain leads to what I assume is a level-selection screen; I didn't investigate further.

Clicking on the gear leads to a settings screen; I didn't investigate further.

There's no obvious tutorial or "help text" button.

Also, the site doesn't really deal with the browser's back button correctly. I'm not sure what it's doing, but it seems to fill up the history with instances of itself, maybe on every click, which made it... more difficult than necessary... to get back to HN afterward.

Click the green box that says t=0, next to where it says Click here.