It could be bigger than the Macarena. Konami’s Dance Dance Revolution (DDR) lets wannabe dance divas get into the interactive groove at their local arcade. Here’s the step-by-step: Pick a song, leap onto a lighted platform, and hit the arrows to the beat. Sounds easy, but try jacking up the difficulty by tackling the built-in tricks or working in some freestyle moves. No wonder throngs gather to gawk. ”It’s one of our three top-grossing games,” says Paul Scalisi, general manager of the high-tech fun house Galactic Circus in New York’s Times Square, where DDR was installed this June. DDR, which made its U.S. arcade debut last year, is already a megahit in its native Japan, where wallflowers can hook up a home version to a Sony PlayStation or Sega Dreamcast. The game has even popped up in videos for Everything but the Girl’s ”Five Fathoms” and Angela Via’s ”Picture Perfect.” ”It’s the first to combine two favorite pastimes — videogames and dancing,” says Konami Amusement of America marketing manager Mary Hermanson. Now we can all be dance machines.