Top scores from players worldwide — opt-in, no account required
Top-ten tables for the games that have them. Submitting a score is opt-in and takes a display name of your choosing — there is still no account, and you can play everything without ever appearing here.
Reaction and timing leaderboards are shaped by hardware as much as by ability. A high-refresh monitor with a wired mouse is worth real milliseconds against a phone, so the top of those tables is not a pure ranking of reflexes.
Memory and logic leaderboards are much less affected, because they do not depend on input latency.
The most useful comparison is still against your own history. A leaderboard is a motivator, not a measurement.
A score, the game it was set on, and the display name you choose. Nothing else — no account, no email, no identifying information.
Your local stats and streaks remain entirely private and separate; nothing from those is published.