Devil's Den: Hood's Assault at Gettysburg is a board game that represents the fighting to control the key Devil's Den terrain feature during the 1863 Battle of Gettysburg of the American Civil War. The wargame was written by Leonard Millman and Dr. David Martin, and was first published in 1980 by Operational Studies Group (OSG). Another wargame representing the same sector of Gettysburg was later published by Avalon Hill. A miniature wargaming Devil's Den game is featured in Enduring Valor: Gettysburg in Miniature.