There is no doubt that casual games totally dominate the portal sales, but which type of game mechanics is most profitable?

For few years was Bejeweled (and clones) the Bestseller no. 1, another years there was Zuma and their clones and now it is hidden objects. It was surprise me a lot, because I do not like this type of game, but I am probably not typical costumer. Hidden objects dominate on most portals during whole year.

Second big genre is Click Management (Cake Mania, Diner Dash and clones) and during end of the year 2007 there pop up fewSim games like Alice Greenfingers or Virtual Villagers which takes a lot of attention too (23% on Yahoo Games).

You can find a lot of other interesting facts in latest Casual Games Quarterly.