Learn
Pick a deck, start remembering
Every page below holds a real deck, generated by SuperGuide and playable right in your browser. No account, no instructions, just questions.
Language · Dutch
Dutch kitchen vocabulary that actually sticks
Learn the essential Dutch kitchen words, from het mes to de koelkast, by playing them as a quiz. Free, no sign-up, and spaced repetition makes them stick.
12 facts · playable
Science · Sleep
How much sleep you need, by age
How much sleep you need at every age, why teenagers cannot wake up, and what a 90-minute sleep cycle is. Play the facts and remember them for good.
05 facts · playable
Science · Marine life
Octopus facts your brain refuses to forget
Why octopuses have three hearts, blue blood and thinking arms. The best octopus facts as a playable quiz you will actually remember.
05 facts · playable
Science · Biology
Photosynthesis, explained so it sticks
How photosynthesis works, minus the textbook fog: chlorophyll, light reactions, the Calvin cycle. Play the facts as a quiz and actually remember them.
23 facts · playable
History · 20th century
The Space Race: the dates worth keeping
Sputnik to Apollo 11: the Space Race's key dates and firsts as a playable quiz. Learn who did what first, and remember it with spaced repetition.
05 facts · playable
Want a deck on something else? Paste your own text into the free demoand make one in three seconds.