Characters & Roles

Factorio features a single playable character—the Engineer—but offers a variety of vehicles and equipment that effectively define different roles and playstyles. This guide introduces every player-controlled unit, their background, strengths, weaknesses, unlock conditions, recommended builds, and team synergy in multiplayer.

1. The Engineer (Default Character)

#### Background
You are an engineer who crash-lands on an alien planet. With nothing but your wits and a portable crafting interface, you must build an automated factory from scratch. You are a lone survivor, but in multiplayer multiple engineers can cooperate.

#### Strengths

Versatility: Can mine, craft, build, fight, and drive all vehicles.

Personal Crafting: Can craft items manually (slowly) without machines.

Equipment Grid: Can be upgraded with modules (exoskeletons, shields, batteries, personal roboports) that drastically enhance capabilities.

Research-driven: All upgrades are unlocked via technology, not leveling.

Fragile: Low base health (75 HP). Dies quickly without armor or shields.

Slow: Base movement speed is modest; vehicles or exoskeletons are needed for fast travel.

Limited Inventory: Base inventory space is finite, expandable through toolbelt research and armor upgrades.

Cannot Fight Swarms Alone: Without weapons and armor, easily overwhelmed by even small biter groups.

Early Game: Focus on hand-mining, building first furnaces and assemblers. Use pistol for defense.

Mid Game: Research armor (e.g., Heavy Armor, Modular Armor), shotgun, car. Automate belts and inserters. Drive the car for scouting and resource collection.

Late Game: Equip Power Armor MK2 with exoskeletons, personal roboports, fusion reactors, and shields. Use tank or spidertron for combat. Deploy construction and logistics bots from your armor.

Early: Iron Armor, Pistol, small power pole.

Mid: Heavy Armor, Shotgun, Car (with fuel). Modular Armor with basic batteries and solar panels.

Late: Power Armor MK2 with:

Weapons: Combat Shotgun or Rocket Launcher for mid-range; Flamethrower for clearing nests; Destroyer capsules (combat bots) for swarms.

Division of Labor: One engineer focuses on mining/smelting, another on science/defense. Use shared blueprints.

Complementary Builds: Engineer A runs a combat build (tank + shields), Engineer B a builder build (exoskeletons + roboports).

Shared Resources: All engineers share the same research and economy.

Vehicle Pool: Share a single train network; use multiple tanks or spidertrons for coordinated attacks.

2. The Car

High Speed: The car can outrun most biters and is excellent for exploration.

Weapon Mount: Equipped with a machine gun that fires forward (fuel-limited but infinite ammo with automation).

Storage: Has a small trunk (80 slots) for carrying resources.

Terrain: Handles grassy plains and desert well; poor on water (cannot cross).

Fragile: Low durability; can be destroyed by biter attacks or trees (crashes).

Off-road Handling: Slows down in forests and on rough terrain. Easily stuck on rocks or cliffs.

Turning Radius: Wide turns; not agile in tight spaces.

No Passenger Armament: Only the driver can shoot; passengers cannot fire.

Automotive

Fuel: Solid fuel or rocket fuel for best acceleration and top speed.

Upgrade: Research Automobile Cannon (damage upgrade).

Add-ons: Cannot be equipped with modules or armor; only the built-in machine gun.

Defensive Driving: Keep a repair pack in trunk; avoid biters when possible.

Scout Role: One player drives the car to explore map and share radar vision.

Resource Transport: Use multiple cars to ferry materials between bases before train network is built.

Escort: Combine with a tank for combat support; car stays behind tank.

3. The Tank

Tank

High Durability: 500 HP plus damage reduction; can withstand significant punishment.

Area Damage: Cannon fires explosive shells that deal splash damage to groups of enemies.

Machine Gun: Secondary weapon for smaller enemies.

Ramming: Can crush small trees and biters without slowing down.

Storage: 80-slot trunk for ammo and loot.

Slow Speed: The tank is slower than the car and on foot (without exoskeletons).

Fuel Consumption: High fuel usage; needs frequent refueling.

Cannon Range: Short range; enemies can hit you before you fire.

Ammo Reliance: Requires cannon shells and machine gun ammo; must be automated.

Cannot Cross Water: Same as car.

Tank

Fuel: Rocket fuel for best acceleration.

Ammo: Carry a stack of cannon shells (explosive for groups, regular for spawners) and plenty of piercing rounds.

Upgrades: Research Physical Projectile Damage and Cannon Shell Damage repeatedly.

Repair Packs: Carry repair packs in trunk; a second player can repair from outside.

Tank + Engineer: Engineer on foot repairs tank while driver shoots.

Multiple Tanks: Coordinate attacks from different angles to split biter aggro.

Spidertron Support: Spidertron can cross cliffs and repair tanks from above.

4. The Locomotive & Wagon (Trains)

Railway

Speed: Trains are the fastest travel method on straight tracks.

Capacity: Cargo wagons can hold up to 40 stacks; fluid wagons up to 25,000 fluid units.

Range: Unlimited; can travel across the map as long as tracks are laid.

Automation: Can be set to automatic mode with schedule; player can also drive manually.

Defense: Locomotive can be armored (via upgrades) and can ram biters on tracks.

Track Dependency: Requires extensive rail network. Cannot maneuver off-track.

Turn Radius: Long trains need large loops or roundabouts.

Crash Risk: Player-driven trains can collide with obstacles or other trains, causing damage and destruction.

No Weapons: Locomotive has no built-in weapons; defenseless unless armed wagons (e.g., artillery wagon) are attached.

Fuel Requirement: Locomotives consume fuel (coal, solid fuel, rocket fuel, nuclear fuel).

Railway

Fluid Handling

Fuel: Nuclear fuel (from uranium processing) provides massive acceleration and top speed.

Train Composition: For manual driving, use 1 locomotive + 1 cargo wagon (for supplies). For combat, attach an artillery wagon (requires Artillery technology, Yellow + Purple science).

Signals: Place chain signals before intersections to prevent player collisions.

Personal Protective Equipment: When driving a train through biter territory, wear power armor with shields (in case of derailment).

Shared Rail Network: All players use the same tracks, signals, and stations. Designate specific stations for each resource.

Train Builder: One player specializes in laying rails and building the train network; others supply materials.

Artillery Train: Combine with radar and repair packs to have a mobile base clearing unit (requires teamwork to defend while artillery fires).

5. The Spidertron

Spidertron

Climbing: Can traverse cliffs, water shallows (though it slows down), and rough terrain. No need for bridges.

Equipment Grid: Has a large grid (up to 8×8 = 64 slots) for personal equipment like shields, exoskeletons, roboports, fusion reactors, batteries. This makes it extremely customizable.

Armament: Three rocket launchers that can fire rockets, explosive rockets, atomic bombs, or other ammo. Can switch between ammo types.

Remote Control: Can be ordered to move autonomously (via the Spidertron remote or map view) even without a player inside.

Passenger Capacity: Can carry one passenger (another player) in addition to the pilot.

High HP: 1000 HP (plus shields from equipment). Very durable.

Expensive: Requires a lot of resources, including processing units, electric engines, and low-density structures.

Slow Without Boost: Base movement speed is slower than a car; exoskeletons are essential for decent speed.

Ammo Hungry: Rockets and especially atomic bombs are complex to produce.

Large Hitbox: Bigger than car/tank, can be hit by more spitters in swarms.

Cannot Drown: Can walk over water at normal speed? Actually, it moves slower in water, but cannot sink. Still, water is a minor obstacle.

Spidertron

Power Generation: 3 Portable Fusion Reactors (or 4 for high consumption builds).

Speed: 2 Exoskeletons for decent speed; more if you want very fast (but drains power).

Shields: 2–4 Energy Shields MK2 for near-invincibility.

Roboport: 1 Personal Roboport MK2 for building; 2 if you want larger construction range.

Batteries: Fill remaining grid with batteries (if needed) or additional exoskeletons.

Weapons: Fill rocket launchers with explosive rockets for general combat; keep a stack of atomic bombs for emergencies (but beware area damage).

Leg Upgrades: Research Spidertron legs (from military tech) to increase movement speed (each level adds 15% speed).

Scout and Commander: One player uses Spidertron to scout and mark biter nests; others follow with tanks.

Construction Partner: The Spidertron's roboport can deploy bots while another player supplies items via logistic requests.

Passenger Role: A second player rides in the Spidertron to repair, reload ammo, or use their own personal roboport to build.

Ranged Support: The Spidertron can stand on cliffs while allies on ground engage; with atomic bombs, it can clear areas before ground troops advance.

6. The Artillery Wagon (Vehicle Attachment)

Artillery

Extreme Range: The artillery shell range is huge (up to 7 chunks away) and can automatically target nests revealed by radar.

Area Damage: Shells explode on impact, damaging all enemies within radius.

Manual Control: Player can aim and fire manually from the wagon's seat.

Autonomous Fire: When on automatic train schedule, it will fire at any revealed nests within range.

Requires Train Track: Can only be used on rails; stationary mode also needs a placed Artillery Turret (different entity).

Ammo Intensive: Artillery shells are expensive (steel, explosives, processing units).

Slow Reload: Rate of fire is slow; need multiple wagons for continuous barrage.

Provokes Biters: Firing attracts overwhelming biter attacks; need extensive defenses around the train.

Artillery

Train Setup: 2 locomotives facing both directions (to reverse), 2–4 Artillery Wagons, 1 Cargo Wagon full of rails and repair packs, 1 Cargo Wagon with ammo.

Defense: Place a personal roboport in the lead locomotive to deploy builder bots for repairing track damage. Have a supply train with repair packs and rails.

Fuel: Nuclear fuel for fast acceleration to escape after firing.

Artillery Train Crew: One player drives, one rides shotgun to repair, one operates manual fire for precision.

Combined Arms: Use Spidertrons or tanks to mop up the biters that rush in after artillery fire.

Base Defense Integration: Connect Artillery Wagon to circuit network (via circuit condition) to fire only when enough ammo is present.

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7. The Rocket Silo (Interactive Structure, not a unit)

While not a character or vehicle, the Rocket Silo is the ultimate goal of the game. It is not player-controlled but is built and supplied by the player. It launches a rocket with a satellite, completing the game. No further details required here.

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Summary Table of Player-Controlled Units

Unit	Unlock Science	Key Use	Combat	Storage	Equipment Grid
Engineer	From start	All-purpose	Yes (equipment)	Evolving	Yes (armor)
Car	Red + Green	Transport / Scout	Light (machine gun)	80 slots	No
Tank	Blue	Combat / Nest clearing	Heavy (cannon + MG)	80 slots	No
Locomotive (Train)	Red + Green	Long-distance transport	No (unless artillery wagon)	Varies (wagons)	No
Spidertron	Yellow + Purple	Combat / Utility / Building	Very heavy (3 rockets)	0? (cannot carry items, only equipment)	8×8 grid
Artillery Wagon	Yellow + Purple	Long-range nest clearing	Extreme range	0 (ammo in separate wagon)	No

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Roles & Playstyles Summary

Even though there is only one character class, different phases and equipment allow distinct roles:

1. Builder: Focus on rapid construction using personal roboport, exoskeletons, and blueprints. Use Spidertron for remote building.
2. Miner / Supplier: Manage outposts, drive trains, use cars for quick resource hauls.
3. Defender: Build walls, turrets, and use tanks or Spidertron for active defense.
4. Explorer: Scout map in a car, place radars, and find resources.
5. Commander: Use Spidertron remote to control a squad of spidertrons or lead teammates in battles.

In multiplayer, players naturally fall into these roles to optimize efficiency. There is no restriction, and any player can switch roles at any time by changing their equipment loadout and vehicle.

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Conclusion

Factorio's characters and roles revolve around the adaptable Engineer and his expanding garage of vehicles. Master each vehicle's strengths and weaknesses, and coordinate with your team to conquer the alien planet. Remember: the most powerful character is the one with a well-designed factory behind them.