My dad does the crossword every single morning with his coffee, same routine for probably twenty years now. My uncle, on the other hand, is a Sudoku guy through and through, won’t touch a crossword if you paid him. Both of them insist their version is the one actually doing something for their brain, and for years I just assumed it was a personal preference thing, like coffee versus tea. Turns out there’s actual research on this, and the answer isn’t as clean as either of them would like.
I got curious enough to dig into word games vs number games brain training research properly, expecting to find one clear winner. What I found instead was more interesting than that, and honestly a little more useful too.
What Word Games Are Actually Doing to Your Brain
Crosswords, word searches, Wordle, that whole category — these lean hard on language retrieval. You’re pulling words out of memory, testing them against constraints, discarding ones that don’t fit. That’s a workout for the parts of your brain tied to vocabulary and verbal memory specifically.
There’s a well-known trial out of Columbia and Duke where people with mild cognitive impairment did crossword training for weeks, and it actually outperformed a set of designed brain-training video games on the main measure researchers used to track cognitive change. Not by a small margin either. The crossword group also did better on a separate measure of everyday functioning, the stuff like remembering to pay bills or follow a recipe, which is arguably more meaningful than any lab score.
What Number Games Bring to the Table Instead
Sudoku and number puzzles hit different circuits. Less about pulling words from memory, more about spatial reasoning, working memory, and holding several possibilities in your head at once while you figure out which one actually fits. It’s a colder, more mechanical kind of thinking, if that makes sense, less about recall and more about logic under constraint.
A large study out of the University of Exeter and King’s College London, involving close to twenty thousand adults over fifty, found that people who did more number puzzles regularly performed noticeably better on problem-solving tasks, roughly on par with people almost a decade younger who didn’t do the puzzles as often. That’s a pretty large effect for something as ordinary as filling in a grid every morning.
So Which One Actually Wins the Word Games vs Number Games Brain Training Debate
Honestly? Neither, cleanly. The research keeps landing in a similar spot: word puzzles seem to give language and memory a stronger boost, number puzzles seem to sharpen problem-solving and reasoning a bit more. If you only ever do one type, you’re probably training one lane of your brain really well and more or less ignoring another one entirely.
This is actually one of the more interesting angles buried in the pinpoint vs wordle vs connections comparison, where different puzzle formats end up testing pretty different mental skills even though they all look like “just a daily word game” from the outside.
There’s also a decent connection here to a common misconception people carry around, the idea that some people are just “word people” and others are just “number people” because of how their brain is wired. The left brain vs right brain myth covers why that split is a lot less real than pop psychology makes it sound, and puzzle preference is honestly a decent example of it — most people can get noticeably better at whichever type they avoid, given a few weeks of practice.
Why Variety Seems to Matter More Than Picking a Winner
A separate large-scale study looking at puzzle habits in older adults found something worth paying attention to here: people who regularly mixed word puzzles, number puzzles, and other types of games tended to score better across a wider range of cognitive measures than people who stuck to just one kind, even if that one kind was something they did daily and consistently.
UCLA Health has written about this, and their basic advice lines up with what the research keeps suggesting, that varying the type of puzzle you do seems to matter more for overall brain benefit than finding the single “best” one and sticking to it forever.
Alzheimer’s Society has also covered the large word-and-number puzzle study out of Exeter and King’s College London in more detail, and it’s a good read if you want the fuller picture beyond just the headline numbers.
What This Actually Means for Your Daily Puzzle Routine
If you’re someone who does a daily puzzle purely for enjoyment, none of this should turn it into a chore or a productivity project. But if part of the appeal for you is the brain-health angle, alternating between something like Wordle one day and a number-based puzzle the next is probably a more well-rounded approach than doing the exact same format every single day for years.
My dad’s not going to switch from crosswords at this point, and honestly that’s fine, the research isn’t saying crosswords are bad, just that they’re covering one part of the picture. If he threw in a Sudoku or a logic puzzle a couple times a week alongside it, though, he’d probably be covering more ground than he currently is.
A Quick Note on Age and When This Matters Most
Most of the research on this topic, it’s worth saying, comes from studies on adults over fifty, often specifically looking at cognitive decline and dementia risk. That doesn’t mean puzzles are useless if you’re younger, but the strongest evidence for measurable brain benefits shows up later in life, which makes sense given that’s when researchers are usually looking for it. If you’re in your twenties or thirties doing a daily Wordle, you’re probably getting some benefit, sharper vocabulary recall, a bit of pattern recognition practice, but you’re not going to see it show up on a cognitive test the way a seventy-year-old doing the same puzzle might.
That said, habits formed early tend to stick, and the people showing the strongest results in these studies are usually the ones who’ve been doing some kind of regular mental exercise for years, not people who picked it up at sixty-five. So if you’re younger and building a puzzle habit now, purely for fun, you’re probably setting yourself up reasonably well for later, even if the payoff isn’t something you’ll notice this week.
The Bottom Line
The word games vs number games brain training question doesn’t really have a single winner, and that’s kind of the point. Word puzzles seem to sharpen language and memory recall more, number puzzles seem to sharpen logic and problem-solving more, and the strongest research on this keeps pointing toward variety being the actual advantage, not brand loyalty to one format. My dad and my uncle are both a little bit right and both a little bit missing half the picture, which is probably true of most people who’ve picked a puzzle lane and never left it.