To see jigsaws grouped by piece count and theme, from first puzzles for toddlers to harder pieces for adults, take a look at the jigsaw collection at brain teaser puzzles.

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.

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.

Part of what makes it work is the head-to-head option. Two players each take a grid, roll the same starting positions, then race to finish first. A single round takes only a few minutes, which makes it easy to fit in before dinner or on a rainy afternoon. It suits ages six and up, and adults tend to get just as competitive as the children.

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

Word games sit in a sweet spot between fun and family-friendly. They give players a reason to think about letters and words, but wrapped up in a race or a puzzle rather than a test. That makes them a popular choice for families who want screen-free play that keeps everyone reaching for letters at the same time.