Bedrock Mob Farm Guide: Hostile Mob Spawning

Bedrock Spawning Mechanics for Mob Farms

Building mob farms in Bedrock requires understanding how the edition handles hostile mob spawning, which is substantially different from Java Edition:

• Mobs spawn based on local density rather than a global mob cap.
• The game prefers spawning mobs on the highest valid block in a column (surface spawning priority).
• Spawning attempts are spread across a larger area around the player.
• The mob cap and density limits are calculated differently from Java.
• Mobs can spawn in a sphere up to 44 blocks from the player but do not spawn within 24 blocks.

Farm Location

For the best results, build your mob farm in a location that minimizes competing spawning surfaces:

• Over ocean: Building over a deep ocean biome means there are fewer land surfaces where mobs could spawn instead of in your farm. This is the best option.
• High altitude: Building at a high Y level (above Y=200) reduces the number of valid spawning surfaces below the farm.
• Underground: Caves and underground spaces provide many competing spawning surfaces. If building underground, light up or fill all nearby caves.

Basic Platform Farm

A simple mob farm design for Bedrock:

Structure

1. Build a dark room at least 8 blocks tall. The floor should be solid blocks at the spawning level.
2. Create multiple spawning platforms stacked vertically, each 2-3 blocks apart.
3. Leave a 2-block gap along the edges of each platform for mobs to walk off or be pushed off.
4. Use trapdoors along the edges. Mobs treat open trapdoors as solid blocks and walk off them.
5. Below the platforms, create a drop shaft that funnels mobs to a kill chamber.

Kill Chamber

Options for killing mobs:

• Fall damage: A 23-block drop kills most mobs. Zombies and skeletons may survive with armor, so make it 24+ blocks to be safe.
• Lava blade: A row of lava flowing over signs or half-slabs. Efficient and collects XP if the last hit is from a player.
• Entity cramming: Push many mobs into a small space. Bedrock handles this differently from Java, so test thoroughly.
• Campfire: Place campfires under the collection area. Mobs take fire damage while standing on them.

Collection

Place hoppers under the kill zone connected to chests. Water streams can push drops toward a central hopper line if the kill area is wide.

Improving Efficiency

• Multiple platforms: More spawning surfaces mean more spawning opportunities. 4-6 stacked platforms work well.
• Spawn-proofing surroundings: While less critical in Bedrock than Java, reducing nearby spawning surfaces still helps. Light up the area around the farm.
• Water flushing: Instead of relying on mob AI to walk off edges, use water dispensers on timers to flush mobs off the platforms. This clears mobs faster and allows new ones to spawn.
• AFK spot: Position your AFK spot 24-44 blocks from the spawning platforms. Mobs spawn between 24 and 44 blocks from the player.

Specific Mob Farms

Creeper-Only Farm

To farm only creepers, use carpet or half-slabs on the spawning surfaces with a 2-block ceiling. Creepers are shorter than most other mobs, so a 2-block ceiling allows creepers to spawn while preventing zombies, skeletons, and endermen. Use ocelots or cats near the farm edges to scare creepers toward the kill chamber.

Spider Farm

Spiders need a 2x2 spawning area and 1-block ceiling height. However, their climbing ability makes containment challenging. Use water streams on walls to prevent climbing and funnel spiders into the kill chamber.

Drowned Farm

Drowned farms in Bedrock are popular because drowned can drop tridents (unlike Java where only naturally spawned drowned can). Build in an ocean biome with a dark spawning chamber at the ocean floor.

Expected Rates

A well-designed Bedrock mob farm over an ocean produces roughly 200-400 items per hour. This is lower than optimized Java mob farms but sufficient for most survival needs. Rates depend heavily on the number of spawning platforms, nearby cave lighting, and the farm's Y level.

Troubleshooting

• If the farm produces very little, check for competing spawning surfaces in caves below.
• Ensure the farm is dark enough. Any light level above 0 prevents hostile mob spawning in Bedrock (same as Java 1.18+).
• Verify your AFK position is the correct distance from the spawning platforms.
• In multiplayer, other players in the area affect spawning. The farm works best with only one player nearby.