The collection
Over 2,000 cards. How many do you have?
Every card you get joins your collection for good, and stays viewable outside a game: its illustration, its date or measurements, and its story.
How it works
Three ways to grow your collection.
Free from the start
In History mode, the hundred most iconic events are playable right away, even without an account.
Won by playing
One card free for every day you log in, and another as soon as a player passes 100 points — the host also collects the ones their guests win.
Completed by theme
For a whole collection on one subject, paid themed packs unlock a whole slice of the catalogue at once, in every mode those cards appear in. They're optional: both routes above stay free.
The packs
Complete your collection.
Each pack brings together the cards of one theme, in every mode they appear in — an animal is often used in Weight, Size and Speed all at once. A pack unlocks for your account: its cards follow you from one device to another.
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The catalogue
See what you're missing.
In the game, the collection is browsed card by card, by category. Cards you don't have yet appear in black and white behind a lock — tap one to see how to get it.
FAQ
What we're asked most.
Can you get everything without paying?
Partly, yes, by playing: one card for every day you log in, another as soon as a player passes 100 points. Of the 200 cards in a pack, 20 can be earned this way — the easiest to place. The other 180, the trickier ones, are reserved for packs: that's what you're buying when you get one.
Are cards you get kept for good?
Yes. A card you get stays in your collection, on every device signed into the same account.
Does a card work in more than one mode?
Often. An object whose size, weight and speed are all known can be played in all three modes: you unlock it once, and it works everywhere.
What if I play with friends?
The game's host also collects the cards their guests unlock with their points. Inviting people grows your collection faster.
Do I need an account to unlock a pack?
Yes. A pack always unlocks for an account: that's what keeps its cards with you from one device to another. The game itself stays free to play without one.