Epic has announced a delay for the 6.21 update for Fortnite.Normally scheduled for October 31 at 2 AM PT / 4 AM ET / 9 AM BST, the update has been delayed to November 1.

According to Epic, the delay is a result of a "last minute issue" found in in Fortnite's new build. The battle royale game was scheduled to go down on October 31 for maintenance while the update was installing, but that is no longer the case. Players should expect Fortnite to go down onthe first November instead. As with previous Fortnite updates, the patch notes for 6.21 won't be released until the day of release.

Fortnite is currently in the middle of its limited-time, Halloween-themed event called Fortnitemares. Introduced on October 23 in update 6.20, the event lasts till November 26 and introduces a new PvP mode that meshes both Fortnite's popular Battle Royale and original Save The World. "Explore all of the tasty treats, exciting appearances, and new looks," Epic Games said about the event. "During Fortnitemares, you'll face off against Cube Monsters in a whole new way of playing Battle Royale. There are new weapons to fight back against these creepy creatures, like the Six Shooter and Fiend Hunter Crossbow."

Fortnitemares' challenges are set to alternate every few days throughout the event. For now, the 4 challenges are the ones listed below. However, part of update 6.21 could be changes to the challenges, so get to them now if you haven't already.

Fortnitemare Battle Royale Challenges

Destroy Cube Monsters (200) -- 500 XP
Deal damage with Assault Rifles or Pistols to Cube Monsters (5,000) -- 500 XP
Visit a Corrupted Area in different matches (7) -- 500 XP
Dance at different Gargoyles (5) -- 500 XP

Fortnite is available for Xbox One, PS4, Nintendo Switch, mobile, and PC.