Egosoft released X4 on 30 November 2018 as the first X game where you can fly every ship, walk around stations and build stations of your own module by module. Ships come in four sizes, with S and M built and sold at Wharves while L and XL come from Shipyards, which decides where a damaged fleet can actually be repaired. Expansions have widened the map considerably since launch, adding the Split, the Terrans, the pirate space around Avarice and the Boron kingdom.
Picking the right build determines how your experience plays out. These builds are ranked by overall effectiveness, factoring in damage, survivability, gear requirements, and how well they scale into endgame. New to the game? Start with our beginner's guide first.
Quick Rankings
| Build | Tier | Playstyle | Core Gear |
|---|---|---|---|
| S class scouts and fighters | A | Balanced | Best available |
| M class corvettes and frigates | A | Balanced | Best available |
| M class miners and traders | A | Balanced | Best available |
| L class destroyers and freighters | A | Balanced | Best available |
| XL class carriers and auxiliaries | A | Balanced | Best available |
For detailed meta rankings, see our X4: Foundations tier list.
A-Tier: S class scouts and fighters
S class scouts and fighters is a top-performing option in X4: Foundations.
Core Setup
| Slot | Choice | Why |
|---|---|---|
| Primary Equipment | Pulse Laser | The all round S and M weapon, cheap to buy, accurate and effective against both shields and hull without excelling at either. |
| Core Gear | Best available for your level | Maximizes build potential |
| Stat Priority | Balanced offensive and defensive stats | Optimal scaling |
| Key Mechanic | Four ship size classes from S to XL | S and M ships are built, equipped and sold at Wharves, while L and XL ships come only from Shipyards. |
How to Play S class scouts and fighters
S class scouts and fighters focuses on a balanced approach to content.
Why this build works: Pulse Laser does the damage and Four ship size classes from S to XL keeps it running, which is why this sits at the top of the list. See our weapons guide for detailed equipment breakdowns.
Pros:
- Highest overall performance
- Straightforward gearing path
- Works in all content types
Cons:
- Popular pick, resources may be contested
- Needs specific gear to reach full potential
A-Tier: M class corvettes and frigates
M class corvettes and frigates is a strong option in X4: Foundations.
Core Setup
| Slot | Choice | Why |
|---|---|---|
| Primary Equipment | Beam Emitter | A continuous beam with perfect tracking, which makes it the answer to fast targets that ordinary projectiles cannot lead. |
| Core Gear | Best available for your level | Maximizes build potential |
| Stat Priority | Balanced offensive and defensive stats | Optimal scaling |
| Key Mechanic | Station building with modules and plots | You buy a plot in a sector, lay out production, storage, docking, habitation and defence modules, then feed a Construction Vessel the materials. |
How to Play M class corvettes and frigates
M class corvettes and frigates focuses on a balanced approach to content.
Why this build works: Pair Beam Emitter with Station building with modules and plots and the build stops depending on a good start, so it holds up across most content. See our weapons guide for detailed equipment breakdowns.
Pros:
- Most versatile option
- Straightforward gearing path
- Works in all content types
Cons:
- Lower peak damage than S-tier
- Needs specific gear to reach full potential
A-Tier: M class miners and traders
M class miners and traders is a strong option in X4: Foundations.
Core Setup
| Slot | Choice | Why |
|---|---|---|
| Primary Equipment | Plasma Cannon | Slow, heavy projectiles with punishing hull damage and terrible tracking against anything that moves quickly. |
| Core Gear | Best available for your level | Maximizes build potential |
| Stat Priority | Balanced offensive and defensive stats | Optimal scaling |
| Key Mechanic | Crew skill and pilot stars | Pilots, managers and marines all carry a star rating, and a low star pilot flies badly, trades badly and dies quickly. |
How to Play M class miners and traders
M class miners and traders focuses on a balanced approach to content.
Why this build works: Crew skill and pilot stars covers the gap Plasma Cannon leaves open, so the build stays usable even when a fight goes badly. See our weapons guide for detailed equipment breakdowns.
Pros:
- Best survivability
- Straightforward gearing path
- Works in all content types
Cons:
- Slower clear speeds
- Needs specific gear to reach full potential
A-Tier: L class destroyers and freighters
L class destroyers and freighters is a specialized option in X4: Foundations.
Core Setup
| Slot | Choice | Why |
|---|---|---|
| Primary Equipment | Shard Battery | A Split weapon that fires a wide spread of projectiles for very high close range damage, at the cost of being nearly useless past short range. |
| Core Gear | Best available for your level | Maximizes build potential |
| Stat Priority | Balanced offensive and defensive stats | Optimal scaling |
| Key Mechanic | Trade and mining automation | Once a ship carries the right software and a pilot with enough stars, you can hand it an autotrade or automine order plus a range of sectors and it will find its own routes. |
How to Play L class destroyers and freighters
L class destroyers and freighters focuses on a balanced approach to content.
Why this build works: This one leans on Trade and mining automation rather than raw numbers, and Shard Battery is what makes that trade pay off. See our weapons guide for detailed equipment breakdowns.
Pros:
- Strong in group/team content
- Straightforward gearing path
- Excels in its niche
Cons:
- Weaker solo performance
- Requires deep game knowledge
A-Tier: XL class carriers and auxiliaries
XL class carriers and auxiliaries is a specialized option in X4: Foundations.
Core Setup
| Slot | Choice | Why |
|---|---|---|
| Primary Equipment | Torpedo Launcher | Heavy guided ordnance that ignores much of a target's turret defence and does enormous damage to stations and capital hulls. |
| Core Gear | Best available for your level | Maximizes build potential |
| Stat Priority | Balanced offensive and defensive stats | Optimal scaling |
| Key Mechanic | Faction reputation gating | Every faction tracks reputation with you separately, and reputation gates blueprints, equipment licences and the maximum ship size you are allowed to buy. |
How to Play XL class carriers and auxiliaries
XL class carriers and auxiliaries focuses on a balanced approach to content.
Why this build works: Torpedo Launcher and Faction reputation gating pull in the same direction here, which separates this from the safer picks above. See our weapons guide for detailed equipment breakdowns.
Pros:
- Unique, rewarding playstyle
- Straightforward gearing path
- Excels in its niche
Cons:
- High skill floor, punishing when misplayed
- Requires deep game knowledge
Build Progression Path
- Start with M class corvettes and frigates: the most forgiving option for learning the game
- Transition to S class scouts and fighters once you understand core mechanics and have access to Pulse Laser
- Keep a M class miners and traders setup for content that keeps killing you
- Try XL class carriers and auxiliaries for a fresh experience once you've mastered the basics
Follow our walkthrough for the optimal progression path through each area.
Gearing Tips
- Invest in your primary equipment first, since it gives the biggest power spike. See our weapons guide for rankings.
- Buy seminars from faction representatives before you buy your second ship. A one star pilot cannot be given autotrade orders at all and a two star pilot picks poor routes, so 30,000 credits of seminars converts a useless hull into an earning one immediately.
- Drop Advanced Satellites over every trade station you visit. They feed live prices back to your map permanently, and without that coverage the trade filter can only show you data you have personally flown past, which makes route planning guesswork.
- Don't spread upgrade resources across multiple builds until endgame
More X4: Foundations Guides
- X4: Foundations X4: Foundations Overview
- X4: Foundations Tier List
- X4: Foundations Walkthrough
- X4: Foundations Beginner's Guide
- X4: Foundations Tips & Tricks
- X4: Foundations Weapons Guide
- X4: Foundations Combat Guide
- X4: Foundations Boss Guide
- X4: Foundations Maps & Locations
- X4: Foundations Crafting Guide
- X4: Foundations Classes & Characters
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