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This world was generated from a real textbook. ← → to move, Space to jump, ↓ + Space to drop through. Use the on-screen controls to run and jump.
How it works
Three steps from a file to a world you can walk around in.
Upload your material
A textbook chapter, lecture notes, a paper. Any PDF or EPUB, in any language.
A world is generated
We write the maps, the characters and hundreds of quiz questions, all from your file. The same questions feed the RPG, the tower and the flashcard deck. Takes a few minutes.
Play or study, and learn on the way
Every character is a quiz on your material, and every question is also a flashcard. Win and the world opens up. Miss and you will see that question again.
Explore the overworld
Prefer exploring to jumping? Every world is also an overworld: walk the maps, read the signs, open the chests and challenge the characters. Each battle is a quiz, and a boss guards every map. The demo above and this one share the same world.
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Then make it stick with flashcards
Study the same questions as flashcards with spaced repetition: flip a card, grade it Again, Hard, Good or Easy, and it comes back right before you would forget it. Learning cards pays XP into the same character, and deck mastery earns ranks that dress it with gear and an aura in the other two modes. Pro members can add their own cards to any world, private to them. Flip and grade real cards from the demo world below; your schedule, XP and rank move to your account when you sign up.
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Space to flip, 1–4 to grade.Tap the card to flip it, then tap a grade.
Built for retention, not for cramming
The mechanics are the study method. Active recall and repetition, disguised as a game.
Missed questions come back
Every question you get wrong is re-asked in rematches and boss fights, and a card graded Again comes back in the deck, until you get it right.
A boss guards every map
Beat enough characters to unlock the boss, then beat the boss to move on. Progress you can feel.
Streaks pay out
Consecutive correct answers, in battles or on cards, multiply your XP and drop items. Stay sharp and the rewards stack up.
Your language, not ours
Questions are written in the language of the document, whatever it is.
Run it with your whole class
Create a classroom, add the worlds you generate from your books and invite your students. They join free and play everything; you see every character and score.
Create a classroom and add your books
Generate a world from any PDF or EPUB you teach from, then add it to your classroom. Up to 50 worlds per classroom, visible only to its members.
Invite your students
Type their email addresses, or share the join link (it carries a code they can type too). A free account is all they need; an invitation stays valid for 30 days.
Follow the class
Every member sees the others’ characters: level, characters defeated, tower stages and flashcard mastery on each world. You see who is playing and who needs a nudge.
Students need no Pro. A free account is enough.
One payment. Yours forever.
Start free, upgrade when you want your own worlds. No subscription.
- Unlimited play on free public worlds
- A taste of premium worlds: 5 battles and 10 tower questions each
- All three modes, on any device
- Progress saved to your account
Launch price for the first 100 buyers or until 31 Dec 2026, then $49.99. 98 of 100 left.
- Turn your own notes into games (3 book-to-game credits)
- Unlimited battles on every world
- Every premium world, every map, all three modes
- Your own flashcards in any world (up to 200)
- Study timer extras: room themes, window views, pets and focus insights
- Classrooms: share the worlds you generate with your students, who join free
- All future updates included
Need more later? Extra book-to-game credits are $4.00 each, 5% off from 3, 10% off from 5 and 20% off from 10.
Questions
What can I upload?
What is a book-to-game credit?
How long does generation take?
Does it work on my phone?
Can I try it before paying?
Does playing actually help me study?
Is this like Anki?
Can I use it with my class?
Your next exam, as a game.
Upload the chapter you have been avoiding and play through it instead.
Create your world