Artistic black and white platformer Limbo has sold a million copies worldwide, developer Playdead has announced. Originally released on Xbox 360 in July 2010, the game eventually made its way to PS3 and PC.

The success of Limbo has helped the studio buy back its independence, and help fund its upcoming game--a title which the studio says won't be ready for at least three years. "We are grateful to everyone who supported us over the past few years, and look forward to forging new partnerships that will both let us reach new heights as a studio and give our director, Arnt Jensen, room to grow creatively," Dino Patti, Playdead CEO said.

Read more: Mac version announced »

Having sold shares in itself to fund Limbo, developer Playdead has now been able to buy itself back, after the acclaimed goth puzzle-platformer went on to the top of the XBLA charts.

Playdead started off funding Limbo itself, also picking up a grant from the Nordic Game Program, but ambitions exceeded cash reserves and it ended up needing help from investors too.

Read more: Playdead is 'really happy' »