The Addams Family: Pugsley's Scavenger Hunt was the 3rd Addams Family game to be released. This particular iteration was also available for the NES, Super NES and Game Boy.
It is a fairly typical side-scrolling platform game with an Addams Family theme and featuring Pugsley as the main character. The goal is for Pugsley to find items scattered about the various levels. One unique feature is that the game is non-linear in the sense that the player can choose the level by choosing what door to enter in the house. It was a fairly difficult game, made harder by the fact that the SNES version didn't have a save or password feature.
For some reason, the NES version of this game was not a port of the same game on the SNES but a port of the previous Addams Family game, originally just titled The Addams Family, released for the SNES, Genesis, Amiga and Atari ST. The same levels were featured (if scaled down) and the same enemies, items and gameplay were also there. It just used Pugsley instead of Gomez as the main character.
Other than the difficulty criticism and the lack of a password/save feature for the SNES version, the game was generally reviewed positively with the SNES version being the best. The excellent graphics are particularly notable. Personally, I would skip it unless you are a big Addams Family fan. It's ok but there are far better games out there.