Borderlands first appeared on gaming platforms all the way back in October 2009 and to celebrate 10 years of mayhem, Gearbox and 2K Games are throwing a month-long celebration in Borderlands 3.

The festivities will be spread over 5 weeks, starting on October 1st and finishing on November 4th, with a new event each week.

Week 1, running from October 1st until October 7th*, is the Bonus Boss Loot! event. Most Borderlands 3 bosses now have an increased chance to drop Legendary loot, so get to it!

Gearbox and 2K are being decidedly secretive about what the rest of the events will entail, promising only to unveil the details each monday, but we can at least tell you their titles and run dates.

  • Week 2 (October 8-14): Rare Spawn Hunt!
  • Week 3 (October 15-21): Show Me the Eridium!
  • Week 4 (October 22-28): Mayhem on Twitch!
  • Week 5 (October 29 – November 4): Spooky Surprise!

If you’re curious about what loot you might be able to nab during the first week’s event, we’ve got a list of bosses and their drops below. Be aware that this list may contain minor spoilers in regards to the Borderlands 3 bosses.

  • Mouthpiece has an increased chance to drop Gatling Gun
  • KillaVolt has an increased chance to drop Brainstormer
  • Gigamind has an increased chance to drop Nagata
  • Katagawa Ball has an increased chance to drop Rectifier
  • Katagawa has an increased chance to drop Legendary class mods (all Vault Hunters)
  • Rampager has an increased chance to drop Kill-o’-the-Wisp
  • Warden has an increased chance to drop Echo
  • GenIVIV has an increased chance to drop Ten Gallon
  • Aurelia has an increased chance to drop Creeping Death
  • Graveward has an increased chance to drop Earworm
  • Pain and Terror have an increased chance to drop Legendary class mods (all Vault Hunters)
  • Troy has an increased chance to drop Nova Berner
  • Tyreen has an increased chance to drop Bitch

Check back in each Monday for an update on what celebrations are in store and, in the meantime, enjoy your Legendary loot!

*The Bonus Boss Loot! event officially runs from October 1st until 7th, but actually ends on October 8th at 8:59AM PDT.