Trivia quiz over 455 questions in 10 categories, with the options shuffled every round so the answer is never in a predictable place. Timer, lifelines, streaks
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Card matching with eight emoji themes, four difficulty sizes and four modes. The deal is a real Fisher and Yates shuffle, measured uniform over 60,000 boards, and a turn is a state machine so two fast clicks cannot strand a card face up.
Slide tiles to combine them and reach 2048. Each tile merges at most once per move, checked exhaustively against the rule, and the board total printed under the grid always equals everything ever spawned. Undo, touch controls and score tracking.
Tic-tac-toe against a minimax opponent, or a friend on the same device. Four difficulty levels, each a stated rate of playing a move that is not the best; on Impossible it cannot be beaten, proved by walking all 16,752 games.
You select the "Science · Medium" category and answer a 4-option question.
Input
Q: "Which gas do plants absorb?" → choose "Carbon dioxide"
Result
Correct · streak +1 · time bonus applied · next question loads
Scoring combines correctness with answer speed and streaks, so consistent fast answers compound. Category and difficulty selection lets you practise a specific weak area rather than random topics. Each round shuffles the four options as well as the questions, which matters more than it sounds: in the written bank the correct answer is option B 216 times out of 455 and option D only 16, so without that shuffle always pressing B would score 47.5 percent where guessing is 25.
How much do you really know? Put your knowledge to the test across categories like science, history, geography, and pop culture. Questions range from "everyone knows that" to "wait, seriously?"and you will learn something new every round.
Learn interesting facts across a wide range of topics while having fun.
Project quiz rounds onto a screen for group trivia nights.
Category-specific quizzes help reinforce knowledge in targeted subjects.
A quick 10-question round keeps your mind engaged and curious.
When someone claims to be a history buff, put them to the test.
Each quiz pulls from a bank of 455 questions across ten categories, four options each, with an explanation after every answer. Two things about a written quiz bank are easy to get wrong and easy to check. The first is where the answer SITS: a bank typed by hand is never uniform, and this one holds the correct option at B 216 times out of 455 and at D only 16, so a player who always pressed B would score 47.5 percent where guessing is 25. The fix cannot be in the data, because a written bank will drift again; every round shuffles the options of every question and moves the answer index with them, so what a player is actually dealt is uniform. The second is the bank itself: every question is checked to have four distinct options, an answer index inside its list, a category label matching the bank it is filed under, and no option that names a POSITION rather than an answer, because "All of the above" stops meaning anything the moment the options are shuffled.
A Classic round is 10 questions. Marathon is longer and Survival runs until you lose three lives.
Yes, and so is the answer ORDER, which matters more. The question set is a prefix of a real Fisher and Yates shuffle of the pool, so a round can never repeat a question, and each question's four options are shuffled before you see them. Without that second step the position of the correct answer would be part of the game: in the written bank it is option B 216 times out of 455.
Correct answers and explanations are shown after each question and in the final summary.
The game runs entirely in your browser. No account is needed and no gameplay data is collected.