The highest x luck I could verify for Steal a Brainrot is 10x server luck during special admin-style events, based on current guides and coverage. Regular boosts like 2x Server Luck and 5x Server Luck are also documented, but 10x appears to be the top public boost mentioned in the sources I found.

What that means

  • 2x Server Luck is a purchasable boost in the game’s luck system.
  • 5x Server Luck is also referenced in guide coverage as a higher multiplier.
  • 10x server luck is described as a free boost during events like Admin Abuse or Taco Tuesday, which is why it’s the strongest “x luck” value mentioned publicly right now.

Quick note

The exact cap can change with updates, events, or temporary promos, so the “max” may be different in a future patch. For the current public info, 10x is the highest clearly documented server luck multiplier.