How do I play a deck someone made?
Type the 6-character code on the game home at /play/ or on /guides/, or open the link you were given. Browse every public deck at /guides/. Decks are free, need no sign-up, and don't change your Knowledge Score.
Got a code? Codes are 6 letters and numbers, like K7XQ4M.
- Open /play/ and type it in the Have a code? box, or
- Go to /guides/ and type it there, or
- Open the link or scan the QR code you were given.
Looking for one? /guides/ lists every public deck. Search by subject and grade, and sort by newest or most played.
How decks play:
- Three choices per card, a joke after every answer, no sign-up needed.
- You see "X of Y learned" as you go. Decks don't add to your Knowledge Score, streak or the leaderboard.
- The answers come from the study guide itself. Where we checked, a card may say an outside source agrees, or warn you that a source says something different. Then ask your teacher which one your test uses.
- Something wrong? Tap Flag this card.
- The deck's maker sees your AhaBulb player name (never your email) and how many cards you answered and got right. Without an account you show up only as "A visitor".
Teachers: each deck page has a QR code, copy buttons and a Teacher handout (PDF).