He stayed at Otpor even after the transformation into the political party and was its MP candidate at the December 2003 parliamentary election. He also became active on the speaking engagement circuit, mostly in the United States, where like Popović he gives lectures on his experiences from Otpor days. Additionally, Marović is one of the designers behind "A Force More Powerful" and "", video games that promote nonviolent struggle as a political tool. During the mid-2000s (decade) he moved to the United States where in 2007 he earned his master's degree from the Fletcher School of Law and Diplomacy at Tufts University in Medford, Massachusetts. In the late 2000s (decade) he returned to Serbia. Since the mid-2000s (decade), he has maintained a blog on B92.net.