Why I didn't put a quiz in a parasite museum: what gamification really is

What gamification is, what research says about its benefits and risks, and how a museum kiosk concept swapped points and quizzes for a collection.

In 1973, three psychologists walked into a nursery school with a box of felt-tip markers.

Mark Lepper, David Greene and Richard Nisbett picked out the children who already loved drawing, the ones who reached for the markers during free play without anyone asking. Then they split them into three groups. The first was promised a reward for drawing: a "Good Player Award", a certificate with a gold seal and a ribbon. The second got the same award as a surprise, after drawing. The third got nothing.

Later, the markers came back out during free play. The children who had been promised the award drew less than before. The other two groups kept drawing as much as ever.

The children hadn't stopped liking markers. Something had changed what drawing meant. It had become something you do to get a ribbon, and without a ribbon in sight, why bother?

Keep those children in mind. They explain most of what goes wrong with gamification, and most of what can go right.

What gamification actually is

The most cited definition comes from a 2011 paper by Sebastian Deterding and his colleagues: gamification is the use of game design elements in non-game contexts. A fitness app that gives you a streak. A language course with levels. A coffee card with ten stamps.

The definition is deliberately narrow. It isn't about building a full game, which is what serious games do. It's about borrowing parts of games, and that's where the trouble starts, because the parts most people borrow are the easiest ones to copy: points, badges and leaderboards.

The game designer Ian Bogost was blunt about it in 2011. He argued that gamification takes the easy, predictable bits of games and leaves behind everything that makes them worth playing, and proposed a less flattering name: exploitationware.

He had a point. Bolt a leaderboard onto something boring and you get a boring thing with a leaderboard. And if the points are the only reason to keep going, you're running the marker experiment on your users.

Does gamification work?

Yes, with conditions. In 2014, Juho Hamari, Jonna Koivisto and Harri Sarsa reviewed the peer-reviewed studies on gamification and found mostly positive effects, but effects that depended heavily on two things: the context it was used in, and the people using it. The same mechanic can motivate one group and put off another.

The research on motivation explains why. Self-determination theory, developed by Richard Ryan and Edward Deci, says people stay motivated on their own when three needs are met: autonomy, competence and relatedness. Feeling that you chose to do it, that you're getting better at it, and that it connects you to others.

Rewards aren't the enemy. In a meta-analysis of 128 experiments, Deci, Koestner and Ryan found that expected, tangible rewards given for simply doing a task tend to reduce intrinsic motivation, while unexpected rewards and positive feedback don't. The ribbon hurt the drawing because it was promised in advance, for doing the thing the children already loved.

Good gamification feeds autonomy and competence. Bad gamification replaces them with a scoreboard. And when the reward is random and costs money, it turns into something darker, which I've written about in the dark UX of gacha games.

The parasite museum problem

I ran into all of this designing a concept for the Meguro Parasitological Museum in Tokyo, the only museum in the world dedicated entirely to parasites. The idea was an interactive kiosk in front of the display cases: four exhibits, each with dense scientific content on taxonomy, life cycles, treatment and prevalence. The brief aimed at kids first, without losing the specialists reading in the same room.

The obvious answer was a quiz. Read the page, answer questions, earn points, climb a leaderboard.

I ruled it out. On paper, a quiz solves engagement. In a museum, it turns the visit into a competition, which pushes away the adult who came to read. And it rewards speed over reading: the fastest way to win a quiz is to skim for answers. That's the marker experiment again, with parasites.

So instead of testing what people read, the concept rewards them for reading.

Make it a collection

Every exhibit page hides a coloured specimen somewhere unpredictable in the content. Visitors find it while reading, drag it into a specimen box, and watch it land. Each page has six draggable worms wandering around the text. There's no score, no ranking between visitors and no timer. Completion is private and goes at your own pace.

Collections work across ages in a way few game structures do. Trading cards, model kits, sneakers: nobody has to explain the appeal to a child, and it doesn't feel childish to an adult. In self-determination terms, it's pure autonomy. Nobody tells you how fast to go.

The most important rule: a specimen is never behind a quiz answer. A wrong-answer gate would punish exactly the visitor the project needed to win over.

Let the mechanic carry the lesson

Each parasite also has a mini-game, and each game was picked because its rules say something true about the species:

• Ascaris: a memory game where you match organs beneath the worm, so you learn its anatomy without a written test.
• Schistosoma: rotate tiles to rebuild the specimen, echoing its unusually folded body.
• Anisakis: a word search full of terms linked to raw fish, which is how people actually catch it.
• Echinococcus: a maze with one exit and no way back, because in humans this parasite's life cycle is a biological dead end.

This is the difference Bogost was pointing at. The maze isn't decoration on top of the content. Losing your way in it is the content.

Show the progress

The specimen box stays visible from every screen. Every catch lands in it with a small animation and a calm sound, so progress is something you can see filling up.

There's research on how much that matters. In a 2006 field experiment at a car wash, Joseph Nunes and Xavier Drèze handed out two loyalty cards that both needed eight washes for a free one. One had eight empty slots. The other had ten slots with two already stamped. After nine months, 34% of the pre-stamped cards had been completed, against 19% of the empty ones. People work harder toward a goal when they feel they've already started.

That's the next thing I'd test on the Meguro concept: placing the first specimen in the box at the welcome screen, so nobody starts at zero.

Keep the tangible reward for the end

Filling the box unlocks a coupon for the museum's gift shop, revealed with a paper strip that tears away, a short fanfare and confetti. It's the only tangible reward in the system, and that's deliberate.

The Deci, Koestner and Ryan meta-analysis is the reason to be careful here. The coupon rewards finishing the collection, not each act of reading, and the reading itself never pays out in points. The page stays the reason to stay. The coupon is a souvenir of a visit that ends with something in your hand instead of a screen going dark.

What I still don't know

None of this is validated yet. The concept hasn't been tested with real visitors, so there's no usability score and no completion rate I'd stand behind. The next step would be moderated sessions in a real gallery, watching kids, parents and specialists use it without instructions.

It's still worth saying out loud, because most gamification case studies skip this part. A collection loop is a hypothesis about motivation. So is a leaderboard. Only one of them has the marker experiment working against it.

Gamification rules I'd give anyone

• Start from the behaviour, not the badge. Write down what you want people to do more of. At Meguro, it was reading. Then reward exactly that.
• Never put content behind a test. Gates punish the people you most need to keep.
• Make the mechanic mean something. If you can swap your mini-game for any other without losing anything, it's decoration.
• Be careful with leaderboards in mixed audiences. Competition motivates some people and drives others away, and in a public space everyone can see who's losing.
• Show progress, and give people a head start. A visible box, a progress bar, a first stamp already in place.
• Keep tangible rewards rare and late. A souvenir at the end is fine. A prize for every action turns the action into a chore.
• Run the marker test. Imagine the points disappear tomorrow. Would anyone keep going? If not, you've built a reason to quit.

The children with the markers

The Meguro case study covers the rest of the concept: the three types of visitor it was designed for, the sound design and the build.

But the idea behind all of it fits in one experiment from 1973. The children who drew for a ribbon stopped drawing when the ribbon was gone. The ones who drew because they liked drawing kept going.

Good gamification is the second group's game. It gives people more reasons to do what they already wanted to do, and never a reason to forget why they started.