The Roblox Rivals battle pass started with Season 3, which launched on April 24, 2026. The update article says “The Fame Season” released on that date and that its new weapons were only obtainable through the Season Pass.

What that means

  • If you mean the first battle pass tied to the current Rivals season system, it began on April 24, 2026.
  • The pass included weapons like the Grapple and Spear, plus new maps and cosmetics.

Quick note

There’s also a Roblox Rivals wiki page describing the Season Pass as a 70-tier feature, but it does not give the exact start date by itself.

TL;DR: the Roblox Rivals battle pass started on April 24, 2026.