A streak in a daily game is a strange object. It unlocks nothing. There is no prize at seven days, no bonus at thirty. It is a number that goes up by one when you show up and resets to zero when you do not.
It is also, by a wide margin, the most effective retention mechanic the format has. Worth understanding why - both as a player deciding how seriously to take it, and because the reason is slightly uncomfortable.
Earning a streak day feels like almost nothing. Going from 11 to 12 is not a moment. Losing it - going from 12 to 0 - feels wildly disproportionate to that.
That asymmetry is the whole mechanism. Losses land harder than equivalent gains, so a streak accumulates a stake without ever having to give you anything. Every day you play adds to what a missed day costs, and the game never had to pay out to build that.
Stated plainly it sounds manipulative, and it can be. The distinction that matters is whether the streak is something you are protecting or something the game is holding hostage. A streak that produces guilt has stopped being a habit and become an obligation, and obligations get abandoned - usually permanently, and usually with some resentment.
When you finish a case, the results screen tells you the streak is on the line rather than just counting down to the next edition. That is deliberate, and it is the honest place to put it: at the moment you have just succeeded, when the number means something, rather than as a nag when you arrive.
The difference between a well-designed streak and a hostile one is largely a question of where you put the reminder. At the end of a win it is a fact. Pushed at you the next evening it is a debt.
Not difficulty. Almost nobody loses a long streak by failing a puzzle - a lost case still counts as played. Streaks die to forgetting, and specifically to a disrupted routine: travel, illness, a weekend that did not look like the week.
Which means protecting one is not about getting better at the game. It is about attaching it to something you already do without thinking - the first coffee, the commute, the queue. Daily games survive by being welded to an existing habit rather than becoming a new one.
That is also the honest argument for the Tipline: the daily email exists because forgetting is the actual failure mode, and an inbox is where most people's routines already live.
Your streak lives in your browser's local storage. Not on a server - we do not have accounts, and we deliberately do not have a copy.
The upside is real: no signup, no password, nothing about your play stored anywhere we could lose or leak. The trade-off is equally real: clearing site data, switching devices, or playing in private browsing resets it, and there is nothing anyone can do to restore it, because no backup exists to restore from.
Play on the same device and browser and it persists indefinitely. That is the whole arrangement, and it is worth knowing before you build a hundred-day streak in an incognito window.
Hard Mode keeps its own streak, independent of the daily. Experimenting there cannot damage the one you have been defending, which is intentional - a game that punishes you for trying the harder setting has mis-designed its own difficulty curve.
The practice archive and random cases affect neither. They exist purely for playing, with nothing at stake.
A streak is a nice number that tracks a habit you enjoy. It is not an achievement, it is not an obligation, and it does not mean anything about you. If yours breaks because you had a life that day, that is the correct outcome and the number was working as intended.
Then start another one. Today's edition is here.