Adulthood is often treated as a stage where we must be serious all the time, and society rarely gives grown-ups permission to relax or enjoy themselves. We’ve built these invisible walls between childhood and adulthood, and without noticing it, we’ve done real damage to how we see and engage with play. Somewhere along the way, we decided that play belongs only to children and that if adults want to play, it should look exactly like it did when we were young. We expect the same excitement, the same toys, the same settings. And when that spark doesn’t show up, we assume play “isn’t for us anymore.”

In Playful, Cas Holman reminds us that healthy childhood play helps us build the mental tools we’ll need later in life, like theory of mind, the early understanding that the world doesn’t revolve around us the way we once believed at age three. Through play, children develop the emotional and cognitive skills that make meaningful adult play possible in the first place.

Holman argues that designing opportunities for play in childhood is an investment in adulthood. Kids who grow up with room to play become adults who can continue playing by thinking flexibly, staying curious, and approaching life with a lighter, more imaginative mind. That’s the state Holman wants to protect for everyone. And yet, as a society, we work so hard to crush it. We throw around phrases like “grow up,” “act your age,” and “don’t be childish,” as if maturity means shutting the door on joy.

We’ve convinced ourselves that adulthood is about control, especially control over our playful instincts. That seriousness equals success. But Playful challenges that belief. This book invites us to think about play with fresh eyes and to consider what we lose when we remove it from our lives.

Playful walks us through the importance of play. But the part that truly grabbed me is the reminder that play is a skill set. The very things we practice through play can help us navigate emerging careers that didn’t even exist five or ten years ago. In a world changing this quickly, play isn’t childish at all. It’s a path forward.

Summary

Why Play Still Matters for Adults: Curiosity, Failure, and Free Play as Tools for a More Fulfilling Life

Children play to grow. They use it to communicate before language fully arrives, to practice sharing and managing emotions, and to strengthen their early thinking skills. In play, mistakes are harmless and even welcome. Each one helps them build a sense of who they are and how the world works.

Adults, meanwhile, enter a different season of life. By our mid-twenties, most of our brain’s core architecture is already in place. We don’t play to develop in the same way children do; we play to sustain ourselves. And we need that sustenance more than we often admit.

For many adults, that nourishment might come from slow, meditative play, such as sorting tools, practicing yoga, or creating small pockets of order. For others, it comes from problem-solving play, the kind found in escape rooms, car tinkering, or puzzles that challenge just enough to calm the mind. There is also identity play and role play, where we get to step outside our routines and briefly become someone else.

But adult play needs a different kind of permission. We have to let ourselves ignore some of the unwritten rules about what “grown-ups” should do. We have to recognize that play isn’t the opposite of productivity and that being playful doesn’t make us any less responsible.

Free play, especially, asks for three things: embracing possibility, releasing judgment, and reframing success. It’s an approach rather than an activity. It can happen almost anywhere: inventing a game while waiting for the bus, drawing in the sand at the beach, or daydreaming without a plan. What we often call “play” as adults, like board games, organized sports, scheduled hobbies, can be wonderful, bonding, and good for us. But they aren’t free play. Free play is looser, softer, unmeasured. And because it isn’t organized or planned, it’s also easier to overlook.

Yet free play matters. It keeps our minds flexible and our creativity alive. It gives us room to fail safely, to try things without needing them to “count,” and to remember what it feels like to explore without a finish line.

To make space for free play, we have to be brave. We have to accept that playing requires vulnerability, trust, and a willingness to take small risks. Letting ourselves play, truly play, means letting go for a moment. But when we do, we often find a version of ourselves that feels more open, more curious, and more fully alive.

Why Curiosity Makes the Brain Come Alive

Curiosity is one of the brain’s most powerful tools. It helps us make sense of complicated ideas and guides us through the endless stream of information surrounding us. Instead of absorbing everything, curiosity helps us choose what truly deserves our attention.

Our brains even treat information as a unique kind of reward. When we discover something new, the brain marks that moment as meaningful, something worth keeping.

Humans are naturally “hypercurious.” We learn by following that instinct. Deep in our neural circuits are systems designed to spot novelty, anything new, unexpected, or different instantly pulls us in. We’re wired to seek out fresh experiences.

And when we do find something new, the brain’s reward system lights up. That spark of excitement is more than a pleasant feeling. It shows that curiosity fuels long-term learning, growth, and motivation.

Play Fuels Human Creativity and Keeps Our Minds Alive

Play sits at the center of human creativity. It’s woven into the way we grow, the way we express ourselves, and the way we discover who we really are. Childhood play nurtures our inner life. It helps us build the capacity to feel truly alive and connected to ourselves. In many ways, play is a foundation for emotional and psychological well-being. As one researcher put it, playing facilitates growth and therefore health.

This connection between play and creativity doesn’t disappear when we become adults. Studies show that people are most creative in workplaces where they feel challenged in a healthy way, supported by their leaders, and given enough freedom to explore ideas. Creativity thrives where curiosity is welcomed, not restricted.

But interestingly, trying to force creativity rarely works. The more we direct someone to “think creatively,” the harder it becomes. And rewards don’t solve the problem. They can motivate simple, repetitive tasks, but they don’t help when the work requires imagination, experimentation, or original thinking.

Play, however, opens that door naturally. It sharpens our wits, teaches us how to navigate social dynamics, and lets us rehearse for adulthood through pretend scenarios and experimentation. When we allow space for play in a genuine and unstructured play, we give creativity the freedom it needs to breathe, stretch, and grow.

Play Builds the Modern Skills We Actually Need

The reality is that most of today’s emerging careers didn’t exist even five or ten years ago. Educators and industry leaders agree that young people need a new set of twenty-first-century skills to thrive: critical thinking, resilience, creativity, systems thinking, and empathy. These aren’t abilities reserved for math or chemistry classrooms. In fact, many of them develop just as deeply, sometimes even more naturally, in English, art, and, importantly, through play. Play can be a pathway to every one of these skills, yet after grade school it almost disappears from how we help young people learn.

On the other hand, too many youth activities are designed around competition and improvement. Kids internalize the message that the point of doing something is to get better at it, win at it, or eventually turn it into a job. That message only grows louder with age.

But what if the point isn’t mastery? What if the value lies in simply doing the thing? Enjoying it, even if we’re not good at it. As adults, rigidity creeps into our thinking. We limit where we think play belongs, what we think we’re allowed to explore, even what careers we believe are “right” for us. Letting ourselves consider alternate possibilities can feel destabilizing. It asks us to step into uncertainty.

That’s exactly why we need practice. Students, and adults, benefit from doing things that aren’t tied to winning, excelling, or proving anything. Play gives us that space. It reminds us that learning, growing, and experimenting don’t always need a scoreboard. Sometimes, the experience itself is enough.

8 Types of Adult Play: How Grown-Ups Can Reclaim Joy, Creativity, and Free Exploration

Play doesn’t end with childhood. It just takes on new shapes. Adults have their own rich spectrum of play styles, each offering a different path to joy, creativity, stress relief, and self-discovery. Here are the main types:

Meditative (Slow) Play

This is play that quiets the mind. It often involves creating order or moving slowly and intentionally. Think of yoga, building with LEGO bricks, assembling IKEA furniture, or making something with your hands. There’s usually a clear outcome, like something finished, something completed, and the satisfaction comes from doing it calmly and correctly.

Creative Play

This is inspired, expressive play. It’s what happens when you make something without instructions, when you get to decide the colors, the shapes, or the rhythm. It includes crafting, decorating your home, tinkering with a new idea, dancing around your living room, or singing in the car. The joy comes from making decisions and following your imagination.

Problem-Solving Play

Some play is about figuring things out. These activities challenge the brain, often with a clear goal or solution at the end. Escape rooms, word puzzles, survivor-style group games, and DIY solutions around the house all fall into this category. They’re satisfying because solving the problem feels like a little personal victory.

Attention Play

This type of play is all about noticing. It asks you to slow down and observe the world around you, such as people-watching at a café, bird-watching at the park, or simply paying attention to the tiny details in your environment. It’s quiet, reflective, and rooted in curiosity.

Possibility Play

Also known as escapist or identity play, this kind brings relief from everyday reality. It lets you step into a different version of yourself or into a different world entirely. Extreme fandom is a great example: sports fans who tailgate, paint their faces, and live inside the thrill of the game. Sometimes this play happens socially; sometimes it happens in the privacy of your room as you get ready for a night out.

Competitive Play

Rules, structure, and opponents (real or imagined) define this category. Competitive play can be anything from sports to board games to online competitions. While it has clearer boundaries, it can still strengthen social bonds and offer a healthy outlet for energy.

Embodied Play

This is play that uses the body as the main tool. Dancing, hiking, going to the gym. Anything that makes the body part of the playful experience fits here. It’s physical, often energizing, and closely tied to emotion and expression.

(Mis)Behavior Play

This form of play nudges against social norms. It’s mischievous, sometimes rebellious, like getting drunk with friends, breaking small rules, or exploring behaviors that feel a bit “off-limits.” It’s a way of testing boundaries and rediscovering a lighter, less controlled version of ourselves.

Across all these types, there’s room for free play that unstructured, improvisational kind of play that isn’t about goals, performance, or productivity. It’s simply about exploring what feels fun in the moment.

---

Author: Cas Holman
Publication date: 21 October 2025
Number of pages: 288 pages

---