Wow, that just keeps going up and up -- very impressive!
Do you know where you got the attention from? Was there some specific large site (4chan, Slashdot, reddit, etc) that did a lot of coverage?
The bulk of it has been from the Kickstarter weekly newsletter--222 pledges have come in from that--at least, for the initial boost that took us from 2.5k to 13.5k.
We're also in rotation to appear on the Kickstarter homepage, although that's relatively insignificant (26 pledges).
As to where, exactly, they're coming from on a day to day basis, I think it's mostly "direct URL" (which I believe includes our VelociraptorCannibalism.com url), searches on Kickstarter for us, and the Board & Card Games discovery page. Almost anything else is been pretty static, not that I've been keeping daily totals, just there are a few I've been keeping a head-count of to see if they change (i.e. I've got an ad up on a site I use and only three pledges have come from there so far...unless they're falling into "direct URL" bucket due to the redirect, and the three have been from posted journals, hmm, oh well).
We have gotten several reviews done, and one shout-out from TunnelBiscuit, who does video game reviews on YouTube (who is apparently well known and followed), though I think their impact has been fairly small.