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.
This walkthrough takes you from your first session to endgame content. Each phase has specific goals, priorities, and milestones. New to the game? Start with our beginner's guide first.
Quick Progression Summary
| Phase | Area | Focus | Build | Duration |
|---|---|---|---|---|
| 1. Start | Argon Prime | Four ship size classes from S to XL basics | M class corvettes and frigates | 1-2 hours |
| 2. Early | Grand Exchange | Station building with modules and plots mastery | M class corvettes and frigates | 3-5 hours |
| 3. Mid | Hatikvah's Choice | Crew skill and pilot stars + gear | S class scouts and fighters or M class corvettes and frigates | 5-10 hours |
| 4. Late | Trinity Sanctum | Build optimization | S class scouts and fighters | 5-10 hours |
| 5. Endgame | Mars | Min-max | S class scouts and fighters or XL class carriers and auxiliaries | Ongoing |
See our maps guide for detailed area breakdowns.
Phase 1: Getting Started (Argon Prime)
The Argon Federation core sector and the usual first stop for new players. It holds shipyard and wharf facilities, plenty of trade traffic and faction representatives who will buy the sector data you gather on your first exploration loop.
Level/Difficulty: First 10 hours Key Rewards: Argon ships and equipment, mission board volume, safe trade routes
What to Do in Argon Prime
- Learn 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. Spend your first session getting comfortable with this.
- Pick M class corvettes and frigates as your starting build. See our builds guide for why.
- 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.
- Acquire your first equipment upgrade: Beam Emitter or whatever's available.
- Clear all main content before moving on.
Phase 1 Checklist
- Understand Four ship size classes from S to XL fundamentals
- M class corvettes and frigates selected and functional
- Argon Prime main content cleared
- Ready for Grand Exchange
Phase 2: Early Game (Grand Exchange)
The Teladi commercial hub, thick with trade stations and the widest variety of wares in one place. Prices here are usually the reference point you compare every other sector against when planning routes.
Level/Difficulty: 10 to 40 hours Key Rewards: Teladi trade goods, high volume buy and sell orders
What to Do in Grand Exchange
- Work on 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. This system becomes critical from here on.
- Farm for Beam Emitter if you haven't already. It's the key upgrade for this phase.
- 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.
- Complete all objectives before pushing to Hatikvah's Choice.
- Consider whether S class scouts and fighters might suit your playstyle better than M class corvettes and frigates.
Phase 2 Checklist
- Station building with modules and plots integrated into gameplay
- Beam Emitter acquired
- Grand Exchange fully cleared
- Ready for Hatikvah's Choice
Phase 3: Mid Game (Hatikvah's Choice)
Home space of the Hatikvah Free League, a small faction that sits between larger powers and hands out plot missions early. It is a useful reputation target because its licences are cheap relative to the major factions.
Level/Difficulty: 10 to 30 hours Key Rewards: Hatikvah plot access, early blueprints, cheap licences
What to Do in Hatikvah's Choice
- Master 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. This unlocks a new layer of gameplay.
- Start working toward Pulse Laser. It's the best equipment and becomes accessible around now.
- Scan station signal leaks whenever you dock. Repairing a leak can pay out credits, illegal ware information or a free module blueprint, and blueprints bought from a faction cost hundreds of thousands of credits each.
- This area is the main skill check. If you can clear it, you're ready for late game.
- Start investing in Trade and mining automation for the tactical depth you'll need going forward.
Phase 3 Checklist
- Crew skill and pilot stars mastered
- Pulse Laser acquired or in progress
- Hatikvah's Choice fully cleared
- Ready for Trinity Sanctum
Phase 4: Late Game (Trinity Sanctum)
Paranid territory under the Holy Order of the Pontifex, and a good example of how faction politics gate your options. Reputation earned with one Paranid power tends to cost you standing with its rival.
Level/Difficulty: 20 to 60 hours Key Rewards: Paranid ships and weapons, Paranid blueprints
What to Do in Trinity Sanctum
- Finalize your build. You should be running S class scouts and fighters or M class corvettes and frigates with optimized gear.
- Pulse Laser should be your primary. If you don't have it yet, prioritize getting it.
- Add habitation modules to every station you build, matched to the species that will staff it. Workforce raises production output substantially above the base rate, so a station without habitation is running at a permanent discount to itself.
- Faction reputation gating optimization starts here. Small improvements compound into massive advantages.
- Farm this area for the resources needed to push into Mars.
Phase 4 Checklist
- Build fully optimized
- Pulse Laser upgraded to max
- Trinity Sanctum fully cleared
- Ready for Mars
Phase 5: Endgame (Mars)
Terran Protectorate space added by the Cradle of Humanity expansion, with its own technology tree that does not interoperate with Commonwealth equipment. The Terran Cadet start begins here and starts you with strong Terran reputation and poor standing with everyone else.
Level/Difficulty: Terran Cadet start onwards Key Rewards: Terran hulls, Terran weapons, Sol system access
What to Do in Mars
- Mars tests everything. Come prepared with your best build and gear.
- Never send an L class ship anywhere alone. Large hulls turn slowly and their turrets cannot cover every angle, so a handful of S class attackers will strip a lone destroyer over several minutes while it fails to bring a single main gun to bear.
- The endgame loop: run Mars, optimize gear, push harder content.
- Experiment with XL class carriers and auxiliaries for a fresh take once you've mastered the standard builds.
- This is where Faction reputation gating mastery separates good players from great ones. See our tips guide for advanced strategies.
Phase 5 Checklist
- Endgame content on farm
- Best-in-slot gear acquired
- Mars fully cleared
- Ready for challenge content
Common Progression Mistakes
- Buying a large ship before buying pilot seminars, then watching an unskilled captain fly it into a Xenon patrol.
- Building a station without habitation modules and wondering why production sits far below the numbers shown in the planner.
- Grinding missions for five factions at once, which leaves reputation too low with all of them to unlock any worthwhile blueprint or licence.
- Sending a destroyer to attack a station alone, since station turrets out range most main batteries and there is nothing to draw their fire.
- Fitting a mining ship with a Mining Drill and then sending it to collect gas, which it physically cannot do.
Key Tips for Smooth Progression
- 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.
- Scan station signal leaks whenever you dock. Repairing a leak can pay out credits, illegal ware information or a free module blueprint, and blueprints bought from a faction cost hundreds of thousands of credits each.
- Add habitation modules to every station you build, matched to the species that will staff it. Workforce raises production output substantially above the base rate, so a station without habitation is running at a permanent discount to itself.
- Never send an L class ship anywhere alone. Large hulls turn slowly and their turrets cannot cover every angle, so a handful of S class attackers will strip a lone destroyer over several minutes while it fails to bring a single main gun to bear.
For more advanced strategies, see our tips & tricks guide.
More X4: Foundations Guides
- X4: Foundations X4: Foundations Overview
- X4: Foundations Best Builds
- X4: Foundations Tier List
- 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
Similar Games
If you enjoy X4: Foundations, check out these related guides:
- Stardew Valley Walkthrough: simulation game with similar mechanics
- Satisfactory Walkthrough: simulation game with similar mechanics
- The Sims 4 Walkthrough: simulation game with similar mechanics
