Slower, more thoughtful word games suit older children and adults who like to plan a high-scoring play. These reward a wider vocabulary and a bit of tactics, so they are better kept for players who enjoy taking their time. If you are buying for a mixed-age family, a fast game is usually the safer bet, since it keeps the youngest involved rather than left behind.

For a hand-picked selection of brain teasers across easy, medium and fiendish levels, have a look at the adult puzzle range at educational games for kids.

Brain teaser puzzles for adults come in a few broad styles. There are mechanical puzzles, such as interlocking metal or wooden pieces you have to take apart and put back together, logic puzzles that ask you to work out a single correct arrangement, and spatial puzzles where you fit shapes into a fixed space. Knowing which type someone enjoys makes it much easier to choose one they will actually sit down with.

Solo puzzle games are useful when you need to keep one child occupied without a second player. The Genius Square and Genius Star are self-contained, so a child can roll, place and solve on a tray table or a picnic blanket without anyone else joining in. Card games such as Flip 7, available from The Happy Puzzle Company, come into their own when the whole family wants a quick round at a campsite or in a holiday cottage.

If you want a shortlist of games tested for family play and grouped by how long they take, browse the family and party games chosen by brain games for adults.

Difficulty varies a lot, so read the age guidance and the suggested group size. A game aimed at families with younger children keeps the clues fairer and the reading lighter, while a harder title will have adults scratching their heads. Working through the puzzles together is good fun, and there is a real sense of satisfaction when the last lock clicks open.