MULTIPLAYER
Challenge a Friend
Complete a round, generate a challenge link, and send it to a friend. They play the same target and you compare results.
SHARE THE CHALLENGE
Complete a round, then send a playable challenge link to any friend. They play the same target on their device—compare accuracy and see who gets closer.
Frequently Asked Questions
How long does a challenge link last?+
Does my friend need to create an account?+
Can I challenge multiple friends?+
How is accuracy calculated in a challenge?+
Casual leaderboard—results are not competition verified. Timing accuracy is a browser-based self-observation tool, not a medical or cognitive assessment.
How This Mode Works
Complete a round at your chosen target. The game generates a unique challenge link with your result locked in. Send the link to a friend — they play the same target. When they finish, both results are compared and a winner is declared.
What Appears in Your Score
Your result, friend's result, winner, accuracy comparison, and link status (pending / completed).