Every few hours the world might turn against you. Red sky, distorted sound, and enhanced monsters that hear you through walls. Sleeping won't skip it.
A Bloodmoon is a hostile night event that can roll roughly every 7 hours. It's announced server-wide when it starts, and it's unmistakable.
Bloodmoons spawn enhanced variants of normal mobs. They're faster, stronger, and ignore the rules you usually rely on for safety.
Three flavours of enhanced mob spawn during Bloodmoons. Each takes a familiar mob and makes it scarier in a different way.
Quick, strong, poisonous melee.
Faster, hits harder, splits on death.
Inaccurate, but reaches further.
Soul Torches are the Bloodmoon's counterweight. They are excellent base defence.
You can prepare for a Bloodmoon, but you can't outrun one. Stay home or stay quiet.