Are you a Logicer?

Learning that feels like play. Games built on real facts, for every curious and intellectual mind.

Today0 of 9 played

New games at midnight.

Today's daily games

New

Same Energy

One real food or drink. Fill a plate or pour glasses of another until it holds the same energy, then see the real amount.A real food or drink. How many of another hold the same energy?

Play1 min

100 of Us

Of 100 people in the world, how many…? Hold, let go at your guess, see how it really is.Of 100 people in the world, how many…?

Play1 min

Your Call

A real moment from history and three choices. What did they actually do?A real moment from history. What did they do?

Play1 min

Long Lost Cousin

One animal, three others. Which one is its closest relative?Which one is the closest relative?

Play1 min

The Club

Some are in the club, some are not. Work out the secret rule and decide who else gets in.Work out the secret rule. Who gets in?

Play1 min

Years Apart

Two real events, and a third one in between. Slide it to where you think it falls, then see the years.Two real events, one in between. Where does it fall?

Play1 min

Who Gets What

One real price, and the people paid out of it. Drag the lines to say who gets what, then see the real split.A real price. Who gets what out of it?

Play1 min

Every Beat

One real animal and its heart. Drag to set how fast you think it beats, then see the real heart beat beside yours.One real animal. How fast does its heart beat?

Play1 min

Out of 24

An animal, or the people of a country. Shade how many hours a day they sleep, eat or work, then see the real hours.A real animal or country. How many hours a day?

Play1 min

Pass the phone

Games for two or more, on one phone.

More games are in the works

New ones join the shelf as they are ready.

Your streak

A streak counts the days you played in a row. A wrong answer never breaks it. Everything is kept only in this browser.

About Logicers

Small games, once a day, the same for everyone. Each one leaves you with one true thing about the world.

Question, mistake or idea? Write to me: logicers.world@gmail.com

Logicers on your home screen

Add it from your browser's menu: Share or Add to Home screen. It opens full screen, even with a weak signal.

Where the facts come from

Every fact was checked on two websites, linked under each answer. 100 of Us and the group games also use the World Bank's open data (CC BY 4.0), rounded. The World Bank does not endorse this site.

Same Street photos: Dollar Street, a Gapminder project. Free material from GAPMINDER.ORG, CC-BY LICENSE. The photographer is named under each answer. Dollar Street does not endorse this site.

Animal silhouettes: PhyloPic. Artists who ask for credit are named under each answer. PhyloPic does not endorse this site.

Same Energy: the US FoodData Central and Norway's Matvaretabellen. Twin or Trap: two dictionaries, named under each answer. So-Called Expert: one fact is invented on purpose, and marked as invented.

If food or eating is hard for you, you are not alone. These help lines are free and open on weekdays: Beat in the United Kingdom (0808 801 0677; in Scotland 0808 801 0432, in Wales 0808 801 0433, in Northern Ireland 0808 801 0434), the National Alliance for Eating Disorders in the United States (+1 866 662 1235), and SOS Disturbi Alimentari in Italy (800 180 969).

Who Was Closer

Send a link from any daily game. A friend plays the same day and you both see who was closer. The scores travel inside the link, after the #, which browsers never send anywhere. Your chosen name is kept in this browser and goes inside the links. See what your friend sees.

This is what your friend sees.

The world's counts

"The world today" compares you with your continent and country, and the World table ranks countries. Each finished daily game sends the game, how far off you were and, for one-number games, your guess to our small server. It reads your country from your connection and keeps only counts: no address, nothing that identifies you, a guess only as an average of two or more. Counts are deleted after 75 days. You can leave your results out under the ? on the World table page.

What players said

When your day's games are done, you can write one line about what surprised you. Khayyam reads it before it shows, and it shows with your country's flag. You can also add a name and an “I am a…” (a student, a teacher…); both are optional, and they show with your line only if you typed them and he lets it through. Write only what you want others to see. A line he lets through is kept a year; the others are deleted within a month. The line, what you typed with it, your country and the date are all that is kept. To have yours removed, write to logicers.world@gmail.com.

Live games

In How Sure?, a host opens a game and everyone joins with a code. No account. Names and answers stay on our small server until a day after the game ends (backups clear within 30 days). Anyone can build their own game; Logicers does not check them, and every screen has a Report link. A saved game keeps what its maker typed, plus players' names and answers when played alone, and is deleted two months after its last use. An email left to recover a link is kept only as a one-way fingerprint, and the address itself only if feedback emails are ticked. Play live · Build your own.

Your privacy

No login, no tracking, no cookies. Your streak and your album are kept only in this browser.

Typefaces: Bricolage Grotesque, Figtree and Literata, under the SIL Open Font License.