Board games are typically played at a table by multiple participants with several different pieces or cards. Usually, although not exclusively, the action takes place on an unfolded board, hence their name. Many of these types of games use a combination of luck and strategy to determine the outcome. Very simple versions, such as Ludo, are suited to younger children. At the same time, more advanced board games, like Monopoly or chess, require a more in-depth understanding of tactical play, so are better suited to older kids and adults. Some modern board games have adult themes, making them unsuited to minors. However, the purpose of most board games is to provide a playing environment that as many people as possible can enjoy together.