Boron (Kingdom End) arcs
The Kingdom End DLC (Boron) is the newest major content DLC, adding the Boron faction return and the recovery of Boron home space. It ships 3 arcs:
- Prelude — Heretic’s End encounter, gate opening
- Main story — The largest single arc in vanilla X4 (1.6MB, 10 chapters Ch0-Ch9 including Khaak Assault carrier combat)
- Epilogue — Kingdom End gates opening post-resolution
Boron home space sectors
Section titled “Boron home space sectors”Kingdom End added these sectors (Boron home space):
| Sector macro | Vanilla name | Role |
|---|---|---|
cluster_601_sector001 | Watchful Gaze | Border/entry sector |
cluster_602_sector001 | Barren Shores | Prelude location |
cluster_603_sector001 | Great Reef | Story exploration |
cluster_604_sector001 | Ocean of Fantasy | Story midpoint |
cluster_605_sector001 | Sanctuary of Darkness (SoD) | Major story hub |
cluster_606_sector001 | Kingdom End I | Queen content |
cluster_606_sector002 | Reflecting Stars | Queen content |
cluster_606_sector003 | Towering Wave | Queen content |
cluster_607_sector001 | Rolk’s Demise | Late-game content |
cluster_608_sector001 | Atreus Clouds | Late-game content |
cluster_609_sector001 | Menelaus Oasis | Late-game content |
Plus pre-existing sectors used as Kingdom End touch-points:
cluster_31_sector001(Heretic’s End) — Prelude locationcluster_30_sector001(Morning Star III) — Story side contentcluster_48_sector001(Getsu Fune) — Bridge to other content
Persistent characters
Section titled “Persistent characters”The Boron arc anchors many characters (more than any other DLC):
| Character | Role |
|---|---|
| Alliance Leader (ALI) | Player’s main contact, faction.alliance |
| Nila | Companion Boron NPC, multi-chapter |
| LedaWe | Story-specific Boron |
| Boron Queen | The Queen of Boron, Chapter 7 climax |
| Mission Specialist | Story logistics |
| Boron Herald (2 variants) | Court ceremonial |
| Boron Announcer | Court ceremonial |
| Boron Scientist | Research dialogue |
| Bar Witness | Side-quest NPC |
| Paranid Emissary | Diplomatic NPC |
| Numanckaret | Named Boron Captain |
Your mod must not despawn any of these or block their dialog.
Faction interactions
Section titled “Faction interactions”faction.boron— main Boron factionfaction.alliance— Alliance subfaction (Alliance Leader)faction.paranid— Diplomatic contentfaction.holyorder— Court relationsfaction.player— All player-facing content
Key gameplay features
Section titled “Key gameplay features”The arc introduces / heavily uses:
- Long-Range Scan (LRS) — Chapter 1 hint system (
Ch1_Player_LRS_Hint) - Watchful Gaze proximity checks — early exploration gating
- Boron Queen Transport Ship — Chapter 7 transport mission
- Sanctuary of Darkness — central plot hub
- Approach handlers (
md.LIB_Generic.ApproachObject_Handler) — used extensively for narrative gating
Mod conflict risks (Boron-specific)
Section titled “Mod conflict risks (Boron-specific)”- ❌ Kingdom End DLC required — script load failure without it
- ❌ Mods that change
faction.boronrelations at start affect arc availability - ❌ Mods that change
faction.alliancemake Alliance Leader hostile break arc - ❌ Mods that block access to Watchful Gaze / Barren Shores prevent arc start
- ❌ Mods that destroy Sanctuary of Darkness sector break Chapter 6+
- ⚠ Boron-relation mods affect arc tone and outcome dialog
- ⚠ Map mods that change Kingdom End sector layouts break narrative flow
Related
Section titled “Related”- Mission encyclopedia — landscape
- Prelude — arc entry
- Main story — biggest vanilla arc (Ch0-Ch7)
- Epilogue — Kingdom End gates opening
- Game starts catalog — gs_boron1, gs_boron2
Kingdom End is X4’s most ambitious single DLC narratively. Your mod’s compatibility audits should walk through it on at least one save.