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Watch trailer on Steam ↗Blood Moon Massacre
Siphon Shock · Published by Siphon Shock · Official site ↗
Last updated 28 Sept 2026
Build a fortress, set traps, and blast your way through hordes of bloodthirsty creatures. Blood Moon Massacre is a fast-paced horde shooter featuring customizable builds and chaotic monster-slaying mayhem. Can you survive the night?
Action, Early Access · More free games
Defend your fortress against endless waves of bloodthirsty creatures in Blood Moon Massacre. Customize your arsenal, set deadly traps, and survive the night in this fast-paced horde shooter from Siphon Shock.
About this game
SEND DEMONS BACK TO HELL
On release Blood Moon Massacre will feature the Eternal Night and Deathfrost maps. Battle demons, vampires, and other creatures of the night as you attempt to survive these nightmarish hellscapes. Additional maps and Steam leaderboards will arrive in updates.
BUILD A FORTRESS, SET TRAPS
Guns and grenades may not be enough to defend yourself against the endless onslaught of monsters honing in on your location, you'll need traps. Build a fortress using barricades, spinning blades, trap doors, attack drones, and other contraptions to fend off the horde and survive the night.
CUSTOMIZE YOUR BUILD
Become an all-out, guns-blazing commando, a technician that can utilize enhanced traps and gadgets, or mix and match skills from any of the four unique classes to suit your play style and become the ultimate survivor. Additional classes will be released in updates.
EARLY ACCESS
It's important for us to build the game the community wants, so Blood Moon Massacre will launch in Early Access to gather player feedback as early in the development cycle as possible. Currently there are two playable survivors and two maps in Blood Moon Massacre, but new survivors, maps, weapons, classes, and multiplayer will be added over time. Sometime after launch, a road map will be posted.
System Requirements
Will my PC run this? →Minimum
- OS: Windows 10
- Memory: 4 GB RAM
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Blood Moon Massacre Demo Update
The Blood Moon Massacre demo has been updated to include two modes:Quick Demo - A condensed version of the full demo where you'll begin with a partially upgraded character, additional weapons, and more money so you can jump right into the action. Can be completed in about 15 minutes.Full Demo - Build your arsenal and fortress from the ground up. The game doesn't end until you die or extract.Chat with the DevsWe're looking for feedback, if you played the demo leave your thoughts in the discussions or on our Discord at https://discord.gg/9Ah2cs3aem, your suggestions might make it into the game.Read full article on Community Announcements (SiphonShockGames)






