Fortnitemares will end with a special one-time event this Sunday, the developer announced the other day. What's a one-time event? We've only had one one-time event in Fortnite before, and it gives us some guidance about what this one will look like. That's what the game means by a one-time event: if you miss it, you miss it. It wasn't without precedent, but the build-up, execution and commitment to the one-time event idea all came together for a truly magical moment.

Source: Forbes November 03, 2018 14:14 UTC