Reaction Lab is a browser-based game site. You do not need to create an account or provide your name to play the games.
Some game preferences and scores are stored locally in your browser so features such as themes, personal bests and Aim settings can work between visits.
Reaction Lab may use browser storage such as localStorage for things including:
This browser-local information can normally be removed by clearing site data in your browser.
Reaction Lab uses Google Analytics 4 to understand general site usage, such as which pages are visited and how the site is used. On this version of the site, Analytics storage is set to denied by default and is enabled only after you choose Allow analytics.
Google Analytics may process information such as page visits, device/browser information, interactions and approximate location information, subject to Google's own terms and privacy practices.
If you decline Analytics, you can continue to use the games normally.
Reaction Lab is preparing for advertising, but this policy does not claim that personalised advertising is currently active.
If Google AdSense or another advertising service is enabled, this policy will be updated as needed and an appropriate consent-management platform will be used for visitors in regions where advertising consent is required.
Analytics, advertising and browser functionality can use cookies or similar local-storage technologies. Where consent is required, Reaction Lab aims to request the relevant choice before enabling that storage.
Reaction Lab is a general-audience game site and does not require players to submit personal information to play. If you are below the age at which you can make privacy choices yourself in your country, use the site with the involvement of a parent or guardian.
You can decline the current Analytics prompt. You can also clear Reaction Lab's saved browser data through your browser settings. If advertising is introduced, additional privacy controls may be provided through the site's consent-management system.
This policy may be updated when Reaction Lab changes its analytics, advertising or site features. The current version was last updated on 16 August 2026.
For privacy questions, use the Contact page or email contactreactionlab@gmail.com.