THINK FAST · 20 TRIALS
Decide whether each short equation is TRUE or FALSE.
Complete exactly 20 equations. Wrong answers count and advance.
READY?
Press T or Left Arrow for TRUE. Press F or Right Arrow for FALSE.
Keyboard: T / ← for true · F / → for false. Touch or mouse: use the two large buttons.
HOW TO PLAY
Start the game and read the short addition, subtraction, or multiplication equation.
Choose TRUE when the answer is correct. Choose FALSE when it is not.
Finish all 20 standard trials, or protect a perfect streak against a shrinking timer in endless mode.
REACTION MATH GAME
Each trial combines reading a compact equation, checking a small-number calculation, and making a two-choice response. True and false equations are balanced in the standard game.
This is a recreational browser game, not an education, intelligence, clinical, or diagnostic assessment. Familiarity, attention, device latency, and input method can affect results.
READ YOUR RESULT
Standard accuracy is the percentage of all 20 choices that were correct. Average and best reaction times use correct answers only.
For a more consistent personal comparison, repeat the same mode on the same device with the same input method.
QUESTIONS
The game uses short addition, subtraction, and multiplication equations with small nonnegative integers. Subtraction answers never go below zero.
No. It lowers your accuracy and advances to the next equation. Standard mode always ends after exactly 20 choices.
Every correct answer adds to your streak and starts a new equation with a shorter deadline. One wrong answer or timeout ends the run.
Yes. The large TRUE and FALSE buttons work with touch, mouse, and assistive input. Keyboard players can use T and F or the Left and Right Arrow keys.
No. It is a recreational speed game, not a measure of learning, intelligence, attention, or health.