What are some popular children’s board games that don’t require adult supervision?

Dobble: Dobble is a speed and observation game for the whole family. The aim of the game? Each two cards have one symbol in common. Be the first to find and name it to win the card.
Snakes and Ladders: players roll dice to advance along a numbered grid, aiming to reach the top while avoiding "snakes" that send them backward and seeking "ladders" that help them climb higher
Connect 4: A strategy game where players take turns dropping coloured discs to form a row of four.
The Game of Life: A family-oriented game where players make life decisions, such as choosing careers and starting families.

At what age can children play board games?

Children typically start playing board games around the age of 3 to 4 because this is when they begin to develop the necessary cognitive and social skills required to understand and enjoy board games, but different themes and levels of complexity mean there are a wide range for board game that children older than this can enjoy.