There is a thing that happens when you tear the foil on a trading card pack. Your heart rate jumps. Your pupils dilate. You hold your breath without noticing. For about three seconds, you are completely present.
Then you see the cards. Usually they are nothing special. A common, an uncommon, a reverse holo you already have three of. The moment deflates. You feel a small disappointment, so small you barely register it.
And then you reach for another pack.
This is not weakness. This is design. The trading card pack is one of the most effective variable reward mechanisms ever invented, and it was invented by accident.
Variable ratio reinforcement is the technical term. It is the same mechanism that makes slot machines work. You do not know when the reward will come. You only know that it might. So you keep pulling the lever.
The research on this is extensive and unsettling. Studies on loot boxes, the digital version of card packs, have found that the same cognitive biases drive both behaviors. People who buy loot boxes score similarly to problematic gamblers on measures like interpretative bias and gambling-related expectancies. They believe they have more control over random outcomes than they actually do. They chase losses. They feel a compulsion to continue.
But here is the interesting part. The research on physical card packs tells a different story.
A 2025 study with nearly 2,000 participants found that spending on physical trading card booster packs is positively correlated with problem gambling symptoms, but the link is weaker than with digital loot boxes. Much weaker. Another study found no meaningful correlation at all. The researchers concluded that while CCGs structurally resemble gambling, they do not appear to engage the same psychological pathways in the same way.
Why the difference?
I think it is because physical packs have friction. You have to go to a store. You have to pay with real money that you can see leaving your hand. You have to carry the packs home. You cannot buy fifty packs in thirty seconds with one click. The friction matters. It gives your brain time to intervene.
Digital loot boxes remove that friction. One click, instant reward, no physical residue. The loop is faster, which makes it more addictive. This is not speculation. It is exactly what the research on behavioral addiction predicts.
But there is another layer to pack opening that research barely touches. The social component.
You do not open packs alone. You open them with friends, or in front of a camera, or in a Discord call. The reaction is the performance. When you pull a rare card, the people around you validate it. They cheer. They say things like "no way" and "that is insane." This social reinforcement is as powerful as the card itself.
YouTube channels with millions of subscribers film pack openings because the content is the reaction, not the cards. The viewers are not watching for the cards. They are watching for the dopamine hit by proxy. It is vicarious gambling, but it feels wholesome because it is cardboard and not chips.
The anticipation is also more important than the outcome. Studies on reward prediction error show that the brain releases more dopamine in the moment of anticipation than in the moment of receiving the reward. The three seconds between tearing the foil and seeing the cards is the peak experience. The card itself is almost irrelevant.
This is why buying a single card outright does not feel the same. If you buy a Charizard on eBay for $500, you know what you are getting. There is no uncertainty. No anticipation. No dopamine spike. You get the card, but you do not get the experience.
The pack opening experience is also protected by what psychologists call the near-miss effect. When you get close to a rare card but miss it, say you pull a holo but not the secret rare, your brain interprets this as evidence that you are getting closer. You are due. The next pack might be the one.
This is irrational. Each pack is independent. The odds do not change because you opened ten packs without a hit. But your brain does not work on odds. It works on narratives.
The trading card industry understands this perfectly. The pack is the product. The cards are just the mechanism. If the industry wanted to sell cards efficiently, they would sell them individually at fixed prices. They do not. They sell packs because packs generate more revenue than cards.
This is not a conspiracy. It is just business. The pack is a better product than the card.
Is this bad? I am not sure.
The research on loot boxes has led to regulation in Belgium, the Netherlands, and Japan. Some policymakers want to regulate physical card packs too. The argument is that if loot boxes are gambling, and card packs are structurally identical to loot boxes, then card packs should be regulated too.
But the physical card research suggests the harm is smaller. The friction, the social context, the tangible nature of the product. These matter. They do not eliminate risk, but they change the shape of it.
I think the honest answer is that pack opening is a mild form of gambling, but it is gambling with guardrails. The cost is bounded by physics. You cannot open a thousand packs in an hour. The experience is social, not solitary. The reward is a physical object you can hold, not a digital token that disappears when the server shuts down.
The dopamine is real. The addiction potential is real. But the container matters. A pack of trading cards is not a slot machine. It is closer to a scratch-off lottery ticket that you open with friends.
That difference is small. But it might be enough.