Mental math
Flash Anzan
A series of numbers will flash on the screen.
Add them as they appear and enter the total.
Starting level
1
3Lives
15Levels
FasterSpeed
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Adaptive. Answer 1-2 correctly to advance a level.
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Survive. Each wrong answer costs a life. Lose all 3 and it ends.
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Intensity. Higher levels mean more numbers, more digits, and faster flashes.