Withdrawal Policy

EU consumers have a 14-day right of withdrawal on most digital purchases. This page explains how the right applies to SERO, when it expires (immediately upon redemption of digital content) and how to exercise it before redemption.

What SERO Measures

SERO is a precision reaction-time game built around one perfect moment: stopping a fast-moving timer at exactly 0.000 seconds. Every input is timestamped on the animation frame, so your score honestly reflects your reflexes — not network lag, not visual estimation, not random variance. The closer to zero you land, the higher the score; landing on 0.005 beats nothing, landing on 0.000 wins everything.

Why Withdrawal Policy Matters

This page exists because reaction-time data only becomes useful when it is contextualised. Raw milliseconds mean nothing without an honest comparison: against your age group, against trained gamers, against the global SERO leaderboard. SERO gives every player the same input loop, the same scoring formula, the same anti-cheat checks — so a score here is directly comparable to a score on the other side of the world.

How To Use This Page

• Read the section above for the headline answer.
• Open the related guides at the bottom for deeper context (training routines, age curves, gaming benchmarks, caffeine, sleep).
• Play one free 90-second SERO run to convert the numbers into a real measurement of your own reflexes.
• Compare your result against the global, country and age leaderboards.

About SERO

SERO is a free browser-based precision reaction game with a 14-day competitive season, global and country leaderboards, async 1v1 duels and a Hall of Fame for past champions. No download, no signup required to play. The game is 100% skill-based — no score multipliers, no pay-to-win, no power-ups. Every score on the leaderboard was earned with the same tools every other player has.