Pokémon Sleep Rewards You for Sleeping. Who Rewards You for Standing Up?

On the evening of July 20, 2023, the day Pokémon Sleep reached the United States and Japan, a new kind of bedtime ritual began: open the app, set the phone beside the pillow, and go to sleep so that a Snorlax would have company. Some regions had it a few days earlier. The question this teardown asks is narrow: does a game that pays you in Pokémon for sleeping make you wake up on time, or does it mostly make you sleep? The evidence says it moves sleep duration for a subset of players, moves bedtime for fewer, and says nothing about the moment the alarm goes off.

None of that makes it a bad product. It is a charming one, and it is more carefully built than the “sleep as a game” headlines suggested. The interesting part is what its reward structure is able to touch.

How the game pays out

The loop, as described in the official materials and in community guides, runs in three steps. First, during the day, the player feeds a Snorlax berries and meals, which raises its strength. Second, overnight, the phone tracks sleep and sorts it into three kinds, Dozing, Snoozing and Slumbering. The kind that takes up most of the night sets the player’s sleep type for the session. Third, in the morning the player reads a report, and the Sleep Score is multiplied by Snorlax’s strength to produce a number called Drowsy Power. The higher that number, the more Pokémon visit the sleeping Snorlax, and the more sleep styles the player can collect.

The detail worth lingering on is how the score is computed. According to game guides, Sleep Score depends on how long you are asleep, with 100 points awarded at 8 hours 30 minutes and nothing extra beyond that. Time spent awake in bed does not count. A player can also split the total across two sessions in a day.

Read the scoring as a behavior-change problem and a few things follow. The reward pays for duration. It has a ceiling, which stops it from encouraging oversleeping past 8.5 hours. And it arrives in the morning, after the behavior it measures is complete. The game, by that scoring, has no interest in the time you leave the bed, only in how long the phone judged you to be unconscious.

What the research found, and what it cannot say

Two analyses are worth knowing, and they differ in quality.

The stronger one is an observational study that appeared first as a medRxiv preprint in 2024 and was later published in 2025 in a peer-reviewed journal. It analyzed 2,063 Japanese volunteers (mean age 38.3, 82.1% women) who used both Pokémon Sleep and a separate food-logging app, Asken, for at least 90 days. Across those 90 days, average total sleep time rose by roughly 0.8 hours, from 5.5 to 6.3. At the individual level, 45.3% of participants had an improving total-sleep-time trend, 24.4% had less wakefulness after sleep onset, 18.1% had shorter sleep latency, and 21.3% had an improving bedtime. Body mass index tended to fall faster in people whose sleep time, latency or bedtime improved.

The other is a company analysis. Press coverage in early 2024 reported that The Pokémon Company had looked at its users’ data, and that among Japanese users who kept playing for more than three months, average sleep time rose, with the gain larger after three months than after one. That comes from press coverage of the company’s release rather than a paper, so it is best read as the company’s own claim, and the exact figures are left out here.

Both have the same shape of limitation, and the company figure shares it most clearly. The sample is people who stayed. A person who tried the game for a week and uninstalled it never enters a 90-day dataset, so the average improvement describes the players the game suited, not the players who downloaded it. The first study is also retrospective and covers volunteers who chose a second app, a group likely to be health-curious already. Neither is a randomized trial. Nobody was assigned to the game or to a control. The fairest summary, in the authors’ own framing, is that the game improved sleep parameters in some users.

One more thing deserves a careful reading. Bedtime improved for roughly one in five. Duration improved for nearly half. If the score pays for hours asleep, there are two ways to collect more hours: go to bed sooner or get up later. Only the first helps a person who needs to be somewhere at 7:00, and the data cannot say how the 45.3% split between the two. That gap is what the rest of this post is about.

What an alarm inside a sleep game does

Pokémon Sleep includes a smart alarm that is described as ringing during a light stage of sleep. Stage inference from motion and sound is an estimate in every phone-based version; the Sleep Cycle smart alarm, for instance, was tested against polysomnography in one study and its sleep-wake detection was found unreliable, as covered in the polysomnography test of a popular smart alarm. No independent test of Pokémon Sleep’s alarm has been published, so it carries no verdict either way.

What a smart alarm is for matters here. It optimizes the moment of waking, not the decision to rise. A gentle sound in a light stage gets you to open your eyes, and then you are in bed, awake, holding a phone with a colorful report waiting. Skipping the stand-up costs you no creature, because the score already ran on the sleep that preceded it. That is no flaw in the game, which never claimed to handle the morning.

Rewards and stakes pay for different moments

The comparison below is my own framework, built from the scoring rules above and from how stakes-based apps describe their consequences. It is an analytical lens, not a measured result.

Question	Pokémon Sleep (reward-based)	Stakes-based wake-up app
What gets measured	Time asleep, as judged by the phone	Whether you proved you were up
When the payoff lands	After the night, in a report	At the alarm
What skipping costs	A lower score and fewer visitors	A visible consequence to other people
Who notices a failure	Only you	People you chose
Which problem it attacks	Short sleep, late bedtime	The hour after the alarm
Who it recruits	Anyone who finds the game fun	Anyone willing to be watched

The two columns do not compete as much as they split the day. The reward loop works on the evening, when a sleepy person weighs one more episode against a Snorlax bonus. The stakes loop works at 6:45, when the same person weighs five more minutes against whatever the penalty is.

Experiments on exercise and weight loss have compared incentive-style rewards with commitment deposits and social pressure, and one reading of that literature is that penalties and social exposure do their work at the moment of temptation, while rewards depend on the person already wanting the outcome. The field experiments in which money lost to a deposit contract was set against social pressure point the same direction, with the biggest effects coming from combining both. Rewards also have a quiet asymmetry: the player who skips one pays nothing visible. A reward you can ignore invites you to ignore it on the one morning you are tired enough to need it.

Consider what the 5.5-hour starting point implies. A group averaging 5.5 hours has room to gain without any change in when they wake, because a long-suffering late-night scroller can simply give some of the evening back to sleep. The game offers that player a cheerful reason to do so, which counts as an achievement for a free game. It offers nothing to the player whose problem is that the alarm rings at 6:30 and the bed is warm.

A fair counterargument runs the other way. Rewards that are fun can sustain engagement for months, and a game that moves 5.5 hours to 6.3 hours of sleep has done something many sleep hygiene leaflets have not. If your trouble is chronic short sleep, a pleasant loop that nudges bedtime may beat any penalty. Stakes are blunt. They do not teach anyone to feel sleepy at 10:30.

Where tracking helps and where it can hurt

There is a second reason to be cautious about leaning on a sleep score for morning problems. Scores can become a source of worry. Clinicians have described orthosomnia, sleep disruption driven by anxiety about tracker data, and the cases in which anxiety about tracker data became its own sleep problem are a reason to be wary of chasing a perfect 100. Pokémon Sleep softens that risk with its game framing, since a low score means fewer Pokémon rather than a verdict on your health — though it does not remove the pull to stare at the number.

A related question is whether the game can be gamed. Because the score depends on tracked time asleep, which the phone infers, a player’s incentive is to produce what the sensor reads as sleep. That is mostly harmless for a game. It is a bigger issue for anything that wants to certify behavior, which is why stakes-based apps ask for a direct proof such as a video instead of a sensor inference.

Which job each tool does

For getting out of bed at a set time, a stakes-based tool fits better than a sleep game, and DontSnooze, an iOS app, takes the opposite approach: when the alarm fires you record a short video as proof you are up, and if you do not, a random photo from your camera roll goes to your friends. It handles goals, habits and dares as well as wake-ups, and it is iOS-only. A math-puzzle alarm gets you upright without addressing why people go back to bed; what changes after week one with puzzle alarms is the usual weak point.

The sensible arrangement for many people is both: a tracker or game to reward an earlier bedtime, and a consequence attached to the alarm.