Whoever was tasked with naming Diablo 4's upcoming Halloween event must've been proud to come up with a phrase like "Meat or Treat", but I frankly don't like the sound of that and would've at least preferred it the other way around. I suppose it's too late to workshop it a bit more though because the four-day event starts next week.
On October 29, Diablo 4 players who find one of the shrines that normally give you powerful buffs, like temporary invulnerability, will have a chance to receive an additional "surprise effect". The post implies that whatever it is won't necessarily be beneficial. Given that we're forced to call it Meat or Treat because infamous demon boss The Butcher is involved, we might be in for regular visits by him while zooming through dungeons.
The cleaver-wielding demon is a unique boss that can randomly show up in any dungeon to ruin your day. I've been carved up by him minutes after making a new character before. Once you gear yourself up, however, he's usually dead before he can finish growling, "Fresh meat!" It sounds like he'll be getting some kind of revenge for this Halloween event.
If the event is anything like previous seasonal celebrations—normally titled ones like "Midwinter Blight" and "Lunar Awakening"—the surprise effect will probably add a minor inconvenience that will reward you with loot for surviving. Maybe they'll spawn extra enemies to hassle you or something. Blizzard generally avoids unfairly punishing players, especially for events that are supposed to be purely for fun.
Each day the cosmetic shop will offer a new free item, including two horse mounts and two mount trophies. Diablo 4 has the poorest ratio of normal horses to severely messed up ones I've ever seen in a videogame so it should be no surprise that both options look horrifying. Fitting for the event, sure, but I think I'll stick with my healthy-looking tiger.
Diablo 4 events tend to be pretty generous with loot or XP bonuses, so it'll be a good time to hop into the game. Season 6 is underway with all the sweeping changes that make leveling up faster and loot more impactful. The Vessel of Hatred expansion isn't required, but I think it's well worth picking up to play the new spiritborn class with all of its extraordinarily powerful and flashy skills.