Mansions of Madness bits players in a battle together against unknown evils. The campaign is story rich and the box contains beautiful miniatures. While not everyone is a fan of app integration, I feel the new mansions of madness apps adds small animals, voice narrations, sound effects and puzzle mini games in ways which add to the board-game instead of tacking away from it.
While survivors set out to work together mansions of madness expands on the Arkham universes Sanity/Stamina damage in unique ways with players taking on various wounds or neurosis which can bit them against the other players, change their individual win conditions or otherwise impede the player in various unique ways or change the games purpose from their perspective which adds uniqueness to each game and makes even replaying a scenario interesting.
Unlike Eldritch/Arkham Horror, Mansions of madness ads variability with a tile map system that adjusts to the player count.