Hard to get them to study? Hand them a game instead.

Try the demo on this page with them: it is the real game. What keeps teenagers coming back is that the questions are from their own textbook, so the game is the homework, and the day streak and three daily goals reward ten minutes rather than an evening. Five modes keep it from going stale. If they stop, nothing is lost: the free account costs nothing and the public worlds stay open.

Both, and that is the point. Every battle, orb and flashcard is a short test with the answer explained right after; the research on learning rates practice testing highest and rereading lowest, and the papers are linked above. An hour of play is dozens of questions on the book, and the ones they missed come back until they stick.

Have them sign up free and open Pro at the top of their dashboard, then pay once with your own card on the checkout page while they are signed in. Their account becomes Lifetime Pro at once, and the receipt goes to their email. There is no gift code and no family plan: Pro belongs to the account that bought it. If you would rather hold the purchase yourself, take Pro on your own account and share their textbooks through a family classroom.

No. Lifetime Pro is one payment that opens every world in full and includes 3 book-to-game credits for their own textbooks. There is no subscription and nothing to cancel; more credits can be bought later if they run out.

Each teenager needs their own free account: progress, streaks and the questions to repeat are saved per account, and two people on one would overwrite each other. For several, take Lifetime Pro on your own account, turn their textbooks into games with the credits and share them through a family classroom they all join free. The Members page then shows everyone side by side. Credits cannot be moved between accounts, so a teen who wants to upload books of their own needs credits on their own account.

Thirteen or older. The service is not directed at children under 13, as the privacy policy says, and every player needs their own account. It is built for secondary school and the exam years, when the textbooks are written in sentences.

On their dashboard: the day streak, the three daily goals, each world’s progress (characters beaten, best tower stage, cards learned, best mini-game score), achievements and their place on the leaderboards; inside a world, their level and XP. In a family classroom, the Members page shows each teen’s level, XP, characters defeated, best tower stage, flashcard mastery, best mini-game score, day streak, points and when they last played. Nothing is sent by email, and you do not see the individual answers; the questions they missed come back to them on their own.

If the material explains things in sentences, yes: history, biology, literature, economics, geography, a language course. Any PDF or EPUB up to 50 MB works, in any language, and the questions come out in the language of the book; the interface is in English, Romanian, Spanish and French. It is weakest on pure calculation and on scanned pages with no text layer.

Yes, without a card. The free public worlds cost nothing and never run out, and the premium worlds come with a preview: 5 battles across them, plus 10 Tower Climb questions and 10 mini-game questions on each, and the flashcards of their first maps. The demo on this page needs no account at all.

Duels and races happen with people they invite by link, with classmates from a classroom they joined, or against the computer; there is no public matchmaking and no chat. Classrooms are private unless their owner opens them. Leaderboards show a display name of their choosing, with a switch in Settings to stay off them, and the account can be deleted from Settings at any time. There are no ads and no tracking cookies.