The arcade version of Ninja Gaiden (released in 1988, in Japan, North America, and Europe) was a Double Dragon-style beat 'em up, in which the player controls a nameless blue ninja (red for a second player) as he travels to various regions of the United States (such as New York City, Las Vegas and the Grand Canyon) to defeat an evil cult led by a fictional descendant of Nostradamus, who is trying to personally fulfil his ancestor's prophecy of the rise of an evil king in 1999. The player has a variety of techniques, such as a flying neck throw and a back-flip. The player can obtain power-ups by throwing characters into background objects, such as street lights and dumpsters. The player fights primarily with his bare hands, although a sword can also be used for a limited time as a power-up; he can also use overhead environmental objects as a prop from which he can deliver more powerful kicking attacks. Although the game takes place in different environments, there are primarily only five kinds of enemies, all of which appear in every level (although some levels have extra enemy types). The game is remembered for its infamous continue screen (where the player character is tied to the ground underneath a descending circular saw).