Battlestar Galactica: Human vs. Cylon is a pair of steel, dueling roller coasters at Universal Studios Singapore. One of the coasters is an inverted roller coaster track in blue (gray from 2017 onwards), and the other half is a traditional seated roller coaster in red. The coasters, which opened in 2010 and was inactive between 2013 and 2015, reach 42.5 metres (139 ft) in height and are the tallest dueling coasters in the world.