Why This Game

Here is what your child knows at the start of each puzzle in Can of Wormholes: there is a worm on a grid. There are some holes. The worm needs to get into a hole. The worm can move up, down, left, and right.

Here is what your child does not know: the rules.

Not all of them, anyway. Your child knows the basic movement — push a direction and the worm slides that way. But each of the game’s 100+ puzzles is designed to reveal a new interaction, a new mechanic, a new behaviour that was — as the game itself describes it — “hidden in plain sight all along.” The worm can be pushed by other objects. The worm can be cut in half. The worm can consume things. The worm’s own body is both an obstacle and a tool. Objects interact in ways that aren’t explained, only discovered. And the discovery is the entire point.

This is not a game where you learn the rules and then apply them. This is a game where discovering the rules is the gameplay. Every puzzle is a miniature system — a self-contained world with its own logic — and your child’s job is to figure out what that logic is by experimenting, observing, and reasoning. The game never tells your child what to do. It never explains a mechanic with text or tutorials. It simply places them in a situation where the only way forward is to try something, watch what happens, think about why it happened, and try something else. If that sounds like the scientific method, that’s because it is.

This is why Can of Wormholes belongs in your child’s Systems Thinking library. Systems thinking is the ability to understand how components interact to produce behaviour that no single component could produce alone. A system isn’t just a collection of parts — it’s the relationships between those parts, the rules governing those relationships, and the emergent behaviour that results when those rules play out over time. Understanding a system means understanding not just what the parts are, but how they work together, how changing one element ripples through the whole, and how simple rules can produce astonishingly complex outcomes.

Can of Wormholes teaches this through pure experience. The game’s components are absurdly simple: worms, holes, walls, ground tiles, void spaces. That’s essentially it. There are no power-ups, no special items, no elaborate mechanisms. Just worms on a grid. But from these few elements, the game generates over 100 puzzles, each revealing a new interaction — and each interaction emerges from the basic physics that were present from the very first level. When your child discovers, twenty puzzles in, that a worm can be cut in half by pushing it past a wall edge, they can look back at every previous puzzle and realise: that rule was always there. They just hadn’t encountered a situation that made it visible. The system didn’t change. Their understanding of it did.

This is the foundational insight of systems thinking: the rules are already operating. They don’t appear when you’re ready for them. They don’t wait for you to notice them. They’re governing the system from the beginning, and what changes isn’t the system but your awareness of it. A 13-year-old who internalises this insight through 100 puzzles of direct experience is developing a mental model that applies to economics, ecology, social dynamics, technology, politics — every complex system they’ll ever encounter. The rules are already there. Your job is to discover them.

The puzzle design is masterful because it follows a pedagogical principle that most schools have abandoned: teach one idea at a time, and teach it through discovery rather than instruction. Each puzzle in Can of Wormholes is built around a single new interaction. The grid is kept small — usually just a handful of tiles — so that the new idea isn’t buried in complexity. Your child’s attention is naturally directed to the one thing that’s different, the one behaviour they haven’t seen before, the one interaction that makes this puzzle unsolvable by the methods that worked on the last one. They have to find the new rule. And because the grid is small and undos are unlimited, they can experiment freely — try something, undo it, try something else, watch what happens, form a hypothesis, test it. The puzzle isn’t punishing them for wrong answers. It’s rewarding them for systematic exploration.

The “Game Insights” hint system deserves special attention because it’s the most educationally sophisticated hint system in any game on this list. When your child is stuck, they can access a “Game Insight” for that puzzle — but it’s not a walkthrough or a solution. It’s a separate mini-puzzle that isolates the key mechanic needed for the main puzzle. Your child has to solve the mini-puzzle themselves, and in doing so, they discover the principle that the main puzzle requires. The hint doesn’t give them the answer — it gives them the right question. This is the Socratic method implemented as game design. It’s teaching through guided discovery, and it means your child can use hints on every single puzzle without losing the intellectual benefit. They’re still doing the thinking. They’re just having their attention pointed in the right direction.

The overworld adds another layer of systems thinking. Between puzzles, your child navigates a tin can through an interconnected world that contains its own puzzles and secrets. The overworld itself operates as a system — spaces connect in unexpected ways, objects interact with the environment, and progress in one area can reveal new possibilities in another. In the game’s final act, the overworld reveals that elements your child encountered hours earlier were part of a larger pattern they couldn’t have seen at the time. The meta-structure mirrors the micro-structure: just as each puzzle reveals a rule that was hidden in plain sight, the overworld reveals connections that were present from the start but only become visible once your child has accumulated enough understanding to see them. Systems within systems, all built from the same simple components.

The developer, Ben, designed this game solo — including the puzzles, the code, and the music. He’s described how most puzzle ideas came to him during walks to the grocery store, when he’d think: “What if a worm did this? What would the implications be?” That process — starting from a simple “what if” and following the implications until they produce something surprising — is itself a perfect model of systems thinking. You don’t need to add complexity to a system to get complex behaviour. You just need to fully understand the implications of the simple rules you already have. Ben followed those implications across 100+ puzzles. Your child follows the same trail, one discovery at a time.

What to Watch For

These are moments and patterns that connect to your child’s developing capacity for systems thinking.

The moment of discovery. Each puzzle is built around a single new interaction. Watch your child’s face when they find it — the moment they push a worm in an unexpected direction and something happens that they didn’t predict. That flash of surprise followed by understanding (“oh — it works like THAT”) is the systems thinking moment. It’s the gap between the system’s actual behaviour and your child’s model of the system closing by one increment. Over 100 puzzles, those increments add up to a sophisticated understanding of emergence.

How they experiment. Some children will approach each puzzle methodically — trying one thing at a time, observing the result, adjusting their approach. Others will mash buttons and hope something works. Both are valid starting points, but the game rewards the first approach far more effectively. Watch whether your child develops experimental discipline over time — whether they start forming hypotheses before moving, testing one variable at a time, and using undos strategically rather than frantically.

Transfer between puzzles. The game’s deepest teaching happens when your child applies a mechanic learned in one puzzle to a completely different context in a later one. Watch for the moments when they say “wait — I can do that thing from before here” and it works. That’s transfer of learning — the recognition that a principle discovered in one system applies to another. It’s one of the highest-order cognitive skills, and most educational contexts struggle to teach it. Can of Wormholes teaches it naturally through structure.

Their relationship with the hint system. If your child uses Game Insights, watch how they engage with them. Do they solve the mini-puzzle thoughtfully or rush through it? Do they carry the insight back to the main puzzle with understanding, or do they return still confused? The hint system is only effective if your child engages with it as a learning tool rather than a shortcut. If they’re using it well, you’ll see them return from a Game Insight with visible comprehension — “okay, NOW I get it.”

Frustration tolerance. Some puzzles in Can of Wormholes are genuinely difficult. Watch how your child handles being stuck — do they take a break and come back fresh, do they stare at the puzzle and think, do they start guessing randomly, or do they ask for a hint? The ability to sit with a problem you can’t yet solve — to tolerate the discomfort of not knowing without either giving up or panicking — is a core systems thinking skill, because real systems rarely reveal their logic quickly.

The overworld exploration. Watch whether your child engages with the overworld as its own puzzle or treats it as a menu to select the next level. A child who explores the overworld curiously — pushing the tin can into corners, testing boundaries, wondering what things do — is applying systems thinking beyond the formal puzzles. They’re treating the entire game as a system to investigate.

Retrospective understanding. The game’s most powerful moments come when your child discovers a mechanic and then realises it was always available. Watch for the backward glance — “I could have done that from the start?” That realisation is the systems thinking insight in its purest form: the system didn’t change. My understanding did.

Family Discussion Questions

These questions are designed for children aged 13 and up. They focus specifically on systems thinking: understanding rules, discovering hidden logic, and recognising how simple components create complex behaviour.

1. Every puzzle in this game introduced a new mechanic — a new rule about how worms and objects interact. But the game never explained any of them. You had to discover each one through experimentation. How did you figure out the rules? What was your process? Builds: Metacognition About Learning Process

This is about making your child’s thinking visible to themselves. “When you encountered a puzzle you couldn’t solve with your existing knowledge, what did you do? Did you try random moves, or did you test systematically? Did you form theories about what might work before trying, or did you experiment first and theorise after? Knowing how you learn is one of the most valuable skills you can have — because once you understand your own process, you can apply it to anything.”

2. The game is built from incredibly simple components — worms, holes, walls, ground tiles. That’s basically it. Yet it produces over 100 genuinely different puzzles. How is that possible? How can such simple ingredients create so much complexity? Builds: Understanding Emergence

This is the central concept of systems thinking. “In the real world, the same thing happens everywhere. Ant colonies produce astonishingly complex behaviour from simple rules that individual ants follow. Economies create elaborate patterns from simple transactions between individuals. Weather produces infinite variety from a few basic physical laws. Complexity doesn’t require complicated ingredients — it requires simple ingredients interacting in enough different ways. Can you think of other examples where simple rules produce complex outcomes?”

3. Many of the mechanics you discovered later in the game were actually available from the very first puzzle — you just didn’t know they existed. What does it mean that the rules were always there but you couldn’t see them? Does that happen in real life? Builds: Recognising Invisible Systems

This is about awareness of systems that are operating whether you notice them or not. “Think about social dynamics in your friend group, your school, or your family. Are there ‘rules’ governing how people behave — patterns, expectations, consequences — that nobody ever explained to you? That you had to discover through experience? What about larger systems — economics, politics, technology? Are there rules operating that most people don’t see? What would change if you could see them?”

4. The Game Insights hint system didn’t give you the answer — it gave you a mini-puzzle that isolated the key idea you needed. After solving the insight, you still had to apply it yourself. How is that different from being told the answer? Which approach helped you learn more? Builds: Understanding the Difference Between Information and Understanding

This is about the nature of learning itself. “Someone can tell you a fact and you can repeat it. But do you understand it? Understanding means being able to apply an idea in a new context, not just recall it in the original one. The Game Insights gave you understanding rather than information. Think about school — how much of what you’re taught gives you understanding versus information? What’s the difference in how it sticks?”

5. When you got stuck on a puzzle, what did you do? Did you try things randomly, or did you experiment systematically? Did you change one variable at a time, or several at once? Over the course of the game, did your approach to being stuck improve? Builds: Developing Experimental Method

This is about the practical skill of systematic investigation. “Scientists don’t just try random things when they encounter a problem — they change one variable at a time and observe the result. That’s the only way to know what caused what. Did you develop that discipline during this game? When you moved a worm and something unexpected happened, did you try to understand why before moving on, or did you just keep going? The habit of asking ‘why did that happen?’ after every unexpected result is the single most important habit in systems thinking.”

6. Some puzzles required you to use your worm’s own body as a tool — your body was simultaneously the thing you were controlling and an obstacle or resource you were manipulating. What does it mean when you’re part of the system you’re trying to understand? Builds: Understanding Participant-Observer Dynamics

This is a sophisticated systems thinking concept. “In real life, you’re never observing a social system from outside — you’re always inside it, and your observations change the system you’re observing. When you study your friend group, your studying changes the dynamic. When a scientist studies a system, their measurement affects what they measure. This puzzle game gave you a tiny version of that problem: your character was both the solver and part of the puzzle. Where else in life are you simultaneously inside a system and trying to understand it?”

7. The overworld connected all the individual puzzles into a larger structure. In the final act, connections that were present from the beginning became visible. What was it like to realise that the puzzles weren’t just isolated challenges — they were part of a bigger system? Did it change how you thought about what you’d already done? Builds: Seeing Connections Between Subsystems

This is about scale — recognising that individual systems are themselves components of larger systems. “Your school is a system. Your family is a system. Your friend group is a system. But they’re all also parts of larger systems — your community, your culture, your society. When something changes in one system, it affects the others. Did the overworld reveal in Can of Wormholes change how you thought about the individual puzzles? Did they mean something different once you could see how they connected?”

8. The developer, Ben, said he designed most puzzles during walks to the grocery store — he’d ask ‘what if a worm did this?’ and then follow the implications. That process — starting from one ‘what if’ and tracing all the consequences — produced 100+ unique puzzles from a handful of simple rules. What’s a ‘what if’ question you could ask about a system in your own life, and what would happen if you followed the implications as far as they go? Builds: Applying Systems Thinking to Real Life

This is the bridge from game to world. “Pick something in your life — your school schedule, your family’s morning routine, the way your friend group communicates, a local business, a sport you play. Ask one ‘what if’ question: what if one rule changed? Then trace the implications. What would that change affect? What would those effects affect? How far does the ripple go? Systems thinkers do this instinctively — they see the connections, the cascades, the second- and third-order effects. You’ve been practising it for 100 puzzles. Now try it with reality.”

9. This game has no story, no characters, no emotional content — just pure puzzles. Yet it won Game of the Year at the Thinky Awards and has a 99% positive rating. What makes pure thinking satisfying? Why does the feeling of discovering a new rule feel so good? Builds: Intrinsic Motivation for Intellectual Discovery

This is about valuing thinking for its own sake. “Most games motivate you with story, rewards, competition, or spectacle. This game motivates you with nothing but the satisfaction of understanding. And it works. Why? What is it about the moment of ‘oh — THAT’S how it works’ that feels rewarding? Is there anything else in your life that gives you that same feeling? What would it mean to seek out that feeling deliberately — to look for systems to understand, rules to discover, patterns to decode — not because someone’s grading you, but because understanding is its own reward?”

10. If every level in this game is a miniature system, then playing Can of Wormholes is like practising systems thinking 100 times. You’ve now got 100 experiences of encountering a system you didn’t understand, experimenting with it, discovering its rules, and solving it. How will you use that skill outside of games? What’s the next system you want to decode? Builds: Identity as a Systems Thinker

This is about your child seeing themselves as someone who thinks in systems. “You’ve spent hours discovering rules that nobody told you about. You’ve learned to experiment systematically, observe carefully, and recognise when a simple rule produces complex behaviour. You’ve practised sitting with not-knowing until understanding arrives. Those aren’t just puzzle skills — they’re thinking skills. They apply to science, to technology, to relationships, to business, to every complex domain you’ll encounter. The question isn’t whether systems thinking is useful. The question is: what system will you apply it to next?”

Parents’ Note

Can of Wormholes was developed by Ben, a solo developer operating under the name munted finger games. It was released in March 2023, won the Thinky Awards Game of the Year in 2024 (beating Chants of Sennaar, COCOON, and The Talos Principle 2), and holds an Overwhelmingly Positive rating on Steam (99% of 530+ reviews). Multiple reviewers rank it among the finest Sokoban-style puzzle games ever created, alongside Baba Is You and Stephen’s Sausage Roll. It is a genuinely exceptional work of puzzle design.

Why we chose it for Grade 8. At 13, your child is cognitively ready for abstract systems thinking — the ability to understand how rules and components interact to produce emergent behaviour. But “ready for” doesn’t mean “practised at.” Systems thinking is a skill that develops through repeated experience with actual systems, and most 13-year-olds have had very little structured practice. Can of Wormholes provides that practice in its purest possible form: 100+ self-contained systems, each with discoverable rules, each building on the last, each training the habit of observation, experimentation, and rule-discovery that systems thinking depends on. By the end of this game, your child won’t just understand systems thinking as a concept — they’ll have the muscle memory of having done it over a hundred times.

The Systems Thinking connection. Systems thinking is one of QMAK’s core libraries because it’s the meta-skill that connects every other discipline. Science is systems thinking applied to nature. Economics is systems thinking applied to markets. Social intelligence is systems thinking applied to people. Technology is systems thinking applied to tools. A child who can look at any complex situation and ask “what are the components, what are the rules, and what behaviour emerges from their interaction?” has a thinking framework that works everywhere. Can of Wormholes trains this framework through direct experience — no lectures, no textbooks, no abstract explanations. Just: here’s a system. Figure it out.

The pedagogical design. What makes Can of Wormholes exceptional as an educational tool is its commitment to one-idea-per-puzzle design. Each of the 100+ levels introduces exactly one new interaction. The grids are kept small and clean so your child’s attention is naturally directed to the new element. This mirrors the best instructional design in any field: isolate the variable, test one thing at a time, build understanding incrementally. Your child is essentially running 100 controlled experiments, each revealing one new property of the system. By the end, their understanding is comprehensive — not because they memorised a list of rules, but because they discovered each rule through their own investigation.

The hint system as educational model. The “Game Insights” feature is worth discussing with your child specifically because it demonstrates something about learning that school rarely makes explicit: the difference between being given an answer and being guided to an understanding. Each Game Insight is a mini-puzzle that isolates the key mechanic — it shows your child what to think about, not what to think. Your child still has to do the cognitive work of understanding and applying. This is the Socratic method embedded in game design, and it’s profoundly effective. If your child uses Game Insights regularly, they’re not “cheating” — they’re engaging with the most educationally sophisticated hint system in modern puzzle gaming.

How to use it. This game is best played solo with intermittent discussion. It’s not a shared-screen experience — the puzzles require focused, individual concentration, and your child needs the freedom to experiment without an audience. But after a session (30–60 minutes, a handful of puzzles), ask: “What did you discover today? What new rule did you find? How did you find it?” These questions make your child’s learning process conscious and articulable — they transform implicit skill development into explicit understanding. If your child can describe what they learned and how they learned it, they’re not just thinking in systems — they’re thinking about their thinking in systems. That’s metacognition, and it’s the most powerful learning amplifier there is.

The deeper value. There’s a moment in Can of Wormholes — it might come at puzzle 30, or puzzle 60, or puzzle 90 — when your child looks at a new grid and, before they’ve moved anything, they can see the logic. They can read the system. They can identify the components, predict how they’ll interact, and intuit the solution path — not because they’ve seen this exact puzzle before, but because they’ve developed an understanding of how this kind of system works. That moment — when pattern recognition becomes system comprehension — is what systems thinking actually feels like from the inside. It’s the transition from “I can solve this puzzle” to “I understand how puzzles like this work.” That transition is the most valuable thing this game teaches, because it generalises. The child who can read a system of worms on a grid can learn to read a system of molecules in a reaction, a system of incentives in an economy, a system of relationships in a community. The specific content changes. The thinking skill doesn’t. Your child is learning, one worm at a time, how to decode the world.