Another full game is on the way, called Fallout: New Vegas. The last of those add-ons, dubbed Mothership Zeta, is coming soon but that doesn't mean Fallout is returning to the vault to stagnate once more.
Since purchasing the license from Interplay, Bethesda revived the post-apocalyptic series last October with Fallout 3 and has been releasing a steady stream of expansions ever since. After years of lurking in the hearts of classic role-playing game fans, the Fallout franchise is back in a big way.