Rakushou! Pachi-Slot Sengen is a series of pachi-slot (Japanese slot machine) simulation games from Tecmo primarily for the PlayStation 2. While early games in the series featured several of Tecmo's real-life gambling machines, the fifth and sixth games focused on the Rio line of machines, as well as their star, , a character who later appeared in the 2010 Dead or Alive Paradise game, starred in the 2011 anime television series ', and appeared playable in the 2017 action game Warriors All-Stars.