Ludo And The Lid Of The Box
A board game so simple it was mostly an argument.
Four counters, one die, and a rule about sixes that every family interpreted differently.
Ludo was in every house because it was cheap and took ten minutes. The board was usually printed on the back of a Snakes and Ladders board, which saved everybody money.
The real feature was the house rules. No two families played the same game, and both were certain the other was cheating.
Cost back then
2/6
Goes for now
£8 new, £20 for a nice fifties box