Via the PlayStation Blog comes the announcement that Sparpweed‘s gorgeously gradiented co-op platformer ibb and obb has officially been slated for at Spring 2013 release, a slight delay from its original plan, which the Dutch indies have explained follows the decision to add a key feature: online multiplayer.

Originally designed as a local two-player game only (and most recently exhibited as such at the recent Joue le Jou show at Paris’s Gaite lyrique), the trailer above shows just how key perfectly synchronized play will be, as well as the game at its best, where both players dip in and out of each others’ gravity fields, describing super beautiful sine waves arcing across each others’ paths.

The video also highlights another of the game’s best features — its score, composed by renowned electronic artist Kettel. Read more about the history of the game and its long road to PSN at its official website.