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.

The Genius Square has become a favourite for families and solo puzzlers who want a game that sets up in seconds and plays differently every time. You roll the seven dice, place a blocker on each grid square the dice point to, then fit the nine coloured shapes into the space that is left. There is always at least one solution, and often more than one, so nobody gets stuck on an impossible board.

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.

To see the traditional board alongside the 3D, giant and garden editions, have a look at the Snakes and Ladders range at The Happy Puzzle Company online.

From about six upwards, children can handle puzzles with a bit more thinking. The Genius Square and Genius Star ask them to roll dice and fit shapes into a grid, which keeps them busy without needing anyone to read a long rulebook. Games like these also work solo, which is useful for a quiet half-hour or a long car journey.

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.