Improve your reflexes anytime, even offline!
Reaction Time Game Extension
UPDATE 2.0 - Made milliseconds completely accurate.
Source Manifest.json
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User reviews
Why me? (ID: 000000e9d6909145) Voted 5 ★ - Updated 12/12/2022
Bar Hibel (ID: 0000001283888509) Voted 5 ★ - Updated 05/09/2022
Luna May (ID: 0000007971a420b1) Voted 5 ★ - Updated 01/30/2018