History
Pre-broadband replay-file leagues
Replay-file leagues let drivers on slow connections compete internationally. Organizers published an event package, drivers raced offline, then uploaded a save, log, or replay for verification. Checksums and controlled setups limited cheating, and standings were published once submissions were checked.
BIR editorial · Reviewed by Ignat Bobrovich · Updated 2026-03-25
Why the format existed
Dial-up connections could not sustain synchronous multiplayer racing with acceptable latency. Small files could be transferred reliably, so competition moved to asynchronous verification.
How integrity was maintained
Organizers fixed the event configuration, distributed identical files, compared checksums, reviewed replays for impossible inputs, and rejected submissions that did not match the specified package.
What it left behind
The habits of the era — evidence, verification, and published sources — still define credible sim-racing results and remain part of BIR's editorial approach.
Sources
- League documentation — Community archives — independent source.
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