Carcer Bloodmoon Onslaught

Quickstart

1. Load your world and watch your action bar — it shows your current Blood Moon tier, the day count, and the current mutation strength of enemies.
2. Run /locate biome com_carcer_bloodmoon_onslaught_hgv7rtf4:carcer_city to find Carcer City, the mod's central biome. Travel there and loot the ruined safe-house structures for a Military Rifle and Medkits.
3. If you want to craft your own gear right away, open a crafting table. Collecting iron ingots unlocks the Military Rifle recipe; picking up a honey bottle unlocks the Medkit recipe.
4. Equip the Military Rifle, aim at a zombie, and use the item to fire a shot. Use a Medkit to heal in a pinch.
5. Survive as long as you can — every 5 days the Blood Moon advances a tier, enemies grow stronger, and new zombie types join the horde.

Overview

Carcer Bloodmoon Onslaught turns the overworld into a relentless zombie apocalypse. A custom biome called Carcer City replaces normal terrain with dark Blood Asphalt streets, Blood Weed vegetation, and the ruins of fortified safe-houses. Outside and inside that biome, passive animals and villagers no longer exist — every spawned creature becomes a zombie. A scripted system continuously spawns waves of mutated monsters near players and ramps up their speed, strength, and toughness over a 9-tier Blood Moon progression tied to in-game days.

What It Adds

Blocks & Terrain

New Enemy Types

All three custom zombies spawn naturally in Carcer City (surface and underground, darkness only) and are also spawned in scripted waves near any player worldwide. They can break doors, climb, and swim.

All custom zombies drop Rotten Flesh and have a small chance to drop iron ingots, carrots, or potatoes when killed by a player.

New Items

How To Use

Military Rifle

Hold the rifle and use (right-click / hold use button) to fire. The shot targets the closest monster in your line of sight up to 32 blocks away. The base hit deals 12 damage plus 2 per Blood Moon tier, so later tiers make it significantly more powerful. The rifle does not consume ammunition.

Medkit

Hold a Medkit and use it (takes about 1 second, slows movement while using). On completion it applies:

• Regeneration II for 6 seconds
• Absorption II for 30 seconds (temporary extra hearts)

Medkits also have an 8% chance to drop into your off-hand slot when you kill any zombie.

Crafting And Obtaining

Both items can be crafted at a crafting table or found by looting Carcer City safe-house structures.

Military Rifle

Medkit

Abilities And Mechanics

Passive-to-Zombie Conversion

Any cow, pig, sheep, chicken, horse, rabbit, cat, wolf, or villager that spawns in your world is immediately replaced by a random zombie type. There are no passive animals in a Carcer Bloodmoon Onslaught world.

Mutation System

Every zombie that spawns — custom or vanilla — is mutated based on the current Blood Moon tier and day count:

Mutation applies Strength, Speed, and Resistance effects to all zombies, with amplifiers that grow alongside the tier.

Blood Moon Tier & HUD

Your action bar always shows:

• Blood Moon X/9 — current tier (advances every 5 days, caps at tier 9)
• Day N — current world day
• Mutation X% — current multiplier as a percentage
• A reminder of the /locate command to find Carcer City

Wave Spawning

Every 10 seconds, the game checks the number of monsters within 48 blocks of each player. If fewer than 100 are present, a new wave of 10–26 zombies spawns in a ring 18–42 blocks away. The pool of possible spawns grows as days pass:

Progression And Strategy

Early game (Days 0–14): Zombies are weak but numerous. Your first priority is collecting iron to craft a Military Rifle. Use the /locate biome command immediately and start traveling — Carcer City safe-houses contain military loot that gives you a significant head start.

Mid game (Days 15–29): Screamers and Bloaters join the horde. Mutations begin scaling noticeably after day 12. Keep a stack of Medkits on hand at all times. Craft spares and store them in a secured shelter.

Late game (Day 30+): All zombie types are present. Mutation scaling becomes severe, and by day 999 enemies reach their peak power. Finding and fortifying a Carcer City safe-house as your base is strongly recommended — the surrounding Blood Asphalt terrain offers recognizable landmarks, and the structures provide natural chokepoints for defense.

Key tips:

• The Military Rifle's damage increases each Blood Moon tier, so it stays relevant throughout the entire run.
• Looting-enchanted weapons improve the rare item drop chances from custom zombies.
• All three custom zombie types can break doors — reinforce your shelter accordingly.
• Zombies that enter water will eventually transform into Drowned, adding another threat.