Of all the Puzz Loop clones, Tumblebugs is my favorite. Even though I do carry Zuma on my iPod, Tumblebugs has a place in my heart probably because of its high production values. Maybe it's also due to the fact that Zuma shows an arrogant attitude towards Central American culture (its "Unga Shaka" soundtrack may sound exotic to gringos but has little to do with Mayan culture). In any case, Ernesto (a fellow game designer here at Powerful Robot) noticed today a joke on Tumblebugs' 7-2 level. A newspaper reads "Mexican spitting frog extinct!", in clear reference to Zuma's frog.