Don't let the jewels and gem-popping lead you on; Ultimate Gem is actually significantly different from Bejeweled. This is primarily due to its new spin on the gem-popping mechanic. Touching a gem results in a cluster of nearby gems to simply disappear. We’ll admit it: it’s probably not as intuitive as Bejeweled, but there’s no denying how fun it is once you get used to its differences. And, unlike Bejeweled, it’s completely free.