A flash-based browser game called Doctor Who: Worlds In Time has just gone live in preview form. The online MMO allows you to take on the role of a companion of the Doctor in a quest to recover “lost shards of time.” Your avatar is customizable and you even get your own sonic screwdriver and customizable room on the TARDIS! The full game will be available in March but you can test-drive it now on the Doctor Who:Worlds In Time website. (Or watch the trailer above for some idea of gameplay.)