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Solo · FREE PLAY

Reaction Challenge

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Reaction
Choose your controls and enjoy a free round.
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THE PLAYBOOK · XIAOANBA

How to play Reaction Challenge

Choose a round of Reaction Challenge and settle into its rules. Finish five valid responses. An early click does not count as a completed response; start that attempt again. Choose a clear next step rather than rushing through the instructions. Choose a comfortable screen position before beginning. Use the example below to understand a decision.

Make the controls familiar

Locate the buttons and input area before beginning a long round. Use the on-screen labels to avoid an accidental restart. Notice the feedback after each input.

Your goal

Finish five valid responses. An early click does not count as a completed response; start that attempt again. Use the instructions to see which actions move you towards it. The example below illustrates a decision.

Step by step

  1. Start a round and wait without clicking.
  2. When GO appears, click or tap the large target.
  3. Read your response time and start the next round.
  4. After five rounds, the game shows the mean time.

Controls

Use the on-screen controls with a mouse or touch. Use the control method described here for this activity. Look at the feedback after the action.

A useful example

A valid 250 ms response counts. Clicking during WAIT is too early and must be repeated. Use the example as a guide rather than a substitute for reading your board. Verify the rule before continuing.

Watch out for this

Browser scheduling, screen refresh and input hardware can affect the measurement. It is not a medical test. Read the feedback to see why an action did not have the expected result. After a move, check what changed. Decide which rule explains the new state before acting again.

Common questions

For a quick reminder, what is the goal of Reaction Challenge?

Finish five valid responses. An early click does not count as a completed response; start that attempt again.

For a quick reminder, how do I control Reaction Challenge?

Here is the relevant explanation: Use the on-screen controls with a mouse or touch.

Before I begin, what example helps explain Reaction Challenge?

For clarity: A valid 250 ms response counts. Clicking during WAIT is too early and must be repeated.

As a new player, what should I watch out for in Reaction Challenge?

Browser scheduling, screen refresh and input hardware can affect the measurement. It is not a medical test.

As a new player, what format does Reaction Challenge offer?

The key detail is this: Play using the solo mode shown on this page. Read the controls before starting a new round.

While learning, which play mode does Reaction Challenge use?

Here is the relevant explanation: The mode on this page is Solo. Same-device play uses one screen; this game library does not provide internet matchmaking.

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