Based on a project by college students studying game design, de Blob pretty much came out of nowhere. The game combines traditional 3D platforming with the "roll over everything in sight" mentality of the Katamari series, and the "graffiti as an act of adventure and expression" philosophy of the Jet Grind Radio series. Despite a minimal marketing budget, the game went on to sell over 900,000 copies, which is pretty fantastic for a new IP that was produced for a fraction of the cost of most million-selling titles.
That success has led to a sequel. de Blob 2 will be hitting the DS, Wii, Xbox 360, and PlayStation 3.