Zynga is celebrating the launch of Zombie Swipeout by unleashing zombies on the streets for New York and San Francisco. The zombies will make their three-hour trek across midtown Manhattan and downtown San Francisco.

Zynga is a conducting a zombie “blood drive” with zombie look-alikes from Zombie Swipeout giving away “blood pops” to passersby. Play attention to Zynga’s twitter handle @zynga (#zombieblooddrive) for up-to-the-minute updates on the location of the zombies.

Source: Zynga.com