IMPORTANT NOTICE:
EMR for Factorio 2.1 build is now available. Double check the settings since some default setting have changed.
ERM_Zerg
Add Zergs to factorio as biters.
This mod is created as an educational demo for Enemy Race Manager
Discord: https://discord.gg/BwWXygyEyQ
ERM - Features Reel: https://www.youtube.com/watch?v=phLRReAjxHA
Feature List
- Add Zerg units and structures as a new enemy force.
- [space-age] Zerg on Vulcanus. Demolish pairs them as nydus worms. (Optional)
- [space-age] Planet Char as new planet. Home of Legendary forces. Features 2 new mineral types and one gas type. Nydus worms also patrol the planet.
- [space-age] Space route to Char are patrolled by zergs. Requires different ship building strategy.
- [space-age] Recipes to build sythetic zerg army and biter eggs for science.
- [space-age] Beat the boss, Overmind, on planet Char for rewards
- Additional details in Feature Details section
Licenses
Lua code files are licensed under GNU LGPLv3
However, Starcraft graphic and sound assets are properties of Blizzard Entertainment Inc. They are used for educational purposes. The original game is now free to play.

Feature Details
All units start with same base health point as original Starcraft. They have unique health multiplier to balance bullet damage on higher tiers.
Tier 1 Units
Zergling
- Attack: Physical
- Unit Supply: 1
Hydralisk
- Attack: Acid
- Unit Supply: 2
Mutalisk
- Attack: Acid
- Unit Supply: 2
Tier 2 Units
Overlord
- Drops units
- Unit Supply: 4
Lurker
- Attack: Physical (2 radius AOE)
- Unit Supply: 2
Infested
- Attack: Explosion (3 radius AOE)
- Unit Supply: 1
Guardian
- Attack: Acid and chance of spawning scourge
- Unit Supply: 3
Devourer
- Attack: Acid (Slow on hit) and chance of spawning scourge
- Unit Supply: 3
Drone
- Builds spore colony or nyduspit
- Unit Supply: 2
Tier 3 Units
Queen
- Attack: Acid (5 radius AOE) (Slow on hit) and spawning broodling
- Unit Supply: 3
Defiler
- Attack: Acid (5 radius AOE), Dark swamp (Heals friendly unit in 8 radius AOE)
- Unit Supply: 3
Ultralisk
- Attack: Physical (3 radius AOE)
- Unit Supply: 4
Physical resistance: 85, Weak elemental resistance: 75, Elemental resistance: 80 with some exceptions.
Zerg Economy
- Greater and higher tier spawner drop larva eggs
- new recipes for larva eggs
- convert larva egg to biter eggs
- build new controllable zerg units.
Planet Char
- Lava planet
- New resources, 2 types of minerals and one gas geyser.
- New techs and recipes
- Patrolled by nydus worm.
- When interplanetary attack is enabled, killing an unit spawner on Chars will activate it.
- Master control entity: Overmind. Defeat it for rewards.
How to spawn Overmind
- Build and place a zerg PSI radar on Char
- Build defense around your radar. However, don't build too close to it as there are artillery strike against it from the boss.
- Wait for the radar to scan, appox 15 minutes, it will notify you when a boss is found.
- Good luck, have fun.