Click ODD or EVEN based on the result
0
Score
0
Best
60s
Time
0
Streak
3
Lives
-ms
Best RT
1200ms
Window
Solve the math equation • Appears for 800ms
ODD result = Click ODD button • EVEN result = Click EVEN button
Correct = +1 point • Window tightens (-40ms)
Wrong/Timeout = -1 point & -1 life • Window loosens (+100ms)
Start with 3 lives • Game ends when lives reach 0
Best Score saves locally • 60 second challenge