Evony is an addictive Civilization-type game that's growing explosively recently.
Much of its growth is due to its viral promo hooks. Here's its traffic pattern:
http://www.alexa.com/siteinfo/evony.com Traffic fell off a bit but nice spikes.
However, it also appears to have grown to its current size due to its aggressive use of porn-like ads like these:
Yet another adult innovation translated into the mainstream realm
