That can be joined in (ish) by a 4yo?
Both dds are loving playing cluedo with us. Not quite four-year-old joins in to a degree - she rolls the dice on her turn, moves her person round the board, makes suggestions in the correct format (Colonel Mustard, in the dining room, with the rope) but can't have her own cards or own notebook page to eliminate clues. But she's happy with that level of involvement while she can't read so it seems to work.
Anyone know of any other decent board games which could work in a similar way - parents and 8yo can play properly and 4yo (she'll be 4 by Xmas but only just) can "join in" to a degree, without spoiling it for the rest of us?