[akrito]

So, if the number modulo 13 is 0, a taunt, "Maybe you could try drawing something," shows up. Any other easter eggs?

[jrichmond]

http://ianab.com/trillion/1000000000000.html ("I think you win something... ") http://ianab.com/trillion/00000000000000.html (sort of an easter egg)

[unalone]

If you go past a trillion, they give you a free bonus page.

[jrockway]

I like the first message: "It's true: you can click on the boxes."

Maybe I've had too much sugar today, but that made me laugh out loud.