Skip to content
Ocean Palace (12,000 B.C.)
Chrono Trigger

Ocean Palace (12,000 B.C.)

Navigate Chrono Trigger's underwater Ocean Palace in 12,000 B.C. Find the Rune Blade, Demonslayer, and more.

By ···10 min read·Multi-source verified
1 reading this guide  

Navigate Chrono Trigger's underwater Ocean Palace in 12,000 B.C. Find the Rune Blade, Demonslayer, and more.

  • Frog and Lucca in your party are recommended for later sections.
Walkthrough
  1. 1
    Upon arriving at the underwater palace, go south and save at the save point.
  2. 2
    Talk to Mune, who is guarding the path; he will disappear.
  3. 3
    After a brief (cutscene (a non-interactive cinematic the game plays automatically)) with Schala and the Queen, proceed to the next room.
  4. 4
    Go south, take the first path east, and enter the northeast room.
  5. 5
    Step on the floor switch to activate it, then defeat the Jinn and Ghul enemies.
  6. 6
    Leave this room, go southwest, and defeat the Scouters.
  7. 7
    Open the chest to the east to obtain a Rune Blade for Frog.
  8. 8
    Continue south and east, defeating the Scouters there.
  9. 9
    Open the chest to acquire an Aeonian Suit.
  10. 10
    Head southwest along the path, then go all the way north, defeating enemies along the way.
  11. 11
    Enter the northwest room, step on the switch, and defeat the enemies.
  12. 12
    Proceed to the next room and defeat the Blue Scouters and Zealot Mage.
  13. 13
    Open the chest to get an Empyrean Blade.
  14. 14
    Return to the large room by heading directly east.
  15. 15
    In the large room, head southeast, then southwest into another room.
  16. 16
    Defeat the Red Scouters inside and open the chest to get a Shockwave for Lucca.
  17. 17
    Continue south into the connected room.
  18. 18
    From the doorway, walk along the western perimeter of the room on the thin path.
  19. 19
    At the south end, walk through a hidden passage in the southeast wall to find a chest containing the Demonslayer for Frog.
  20. 20
    Return to the doorway you started from, then go south and defeat all enemies.
  21. 21
    Open the chest in the bottom corner of the room to get a Sonic Bow for Marle.
  22. 22
    Head east and hit the next floor switch.
  23. 23
    At the other end, go north, defeat the enemies, and open the chest to get a Kaiser Arm for Robo.
  24. 24
    Go north and northwest into the next room.
  25. 25
    Follow the path north and east into the following room.
  26. 26
    Defeat the enemies and open the chest to get an Aeonian Helm.
  27. 27
    Go back west to the previous room and head southwest, then south across the newly formed bridge into the next room.
  28. 28
    Defeat the enemies and head west down the stairs to the following room.
  29. 29
    In this room, go down the stairs and head south.
  30. 30
    Defeat the enemies that appear (Crono's *Luminaire works well here).
  31. 31
    Continue south and down more stairs.
  32. 32
    At the bottom, defeat the 4 Monks in that room.
  33. 33
    Continue down more stairs to the room below and beat the enemies there.
  34. 34
    Go down another set of stairs and beat this last set of enemies.
  35. 35
    Talk to Masa at the top of the last set of stairs.
  36. 36
    Continue down to the next room.
  37. 37
    Defeat the Djinn and Ghul, then rest/save at the nearby save point.
  38. 38
    Go south to the next room.
  39. 39
    Go south and defeat all the enemies here.
  40. 40
    Check the sparkling orb to the left to activate the elevator.
  41. 41
    Be prepared to fight several groups of enemies during the elevator descent.
  42. 42
    At the very bottom, go north into the next room.
  43. 43
    Go along the west side of this room into another room.
  44. 44
    Defeat the Scouter, Red Scouter, and Blue Scouter inside.
  45. 45
    Hit the switch on the wall and leave this room.
  46. 46
    Go south and east, then along the east side of the room into the room at the other end.
  47. 47
    Beat the same 3 enemies in there and hit that wall switch.
  48. 48
    Go back to the previous room.
  49. 49
    Step on the blue switch in the middle of the room to make a lower path appear.
  50. 50
    Head north into the next room.
  51. 51
    Open the chest to get an Elixir.
  52. 52
    Save/rest at the save point.
  53. 53
    Go north and you will meet Dalton again; he will send two Golems after you.
  54. 54
    After defeating the Golems, Dalton will leave.
  55. 55
    Talk to the Nu in your way; it will move.
  56. 56
    Continue forward to see Schala and the Queen activating the Mammon Machine.
  57. 57
    Crono will use the Ruby Knife to try and stop the machine, but Lavos will emerge and fight you.
  58. 58
    Your group will be defeated. The Prophet reveals himself as Magus and fights Lavos, but loses.
  59. 59
    The Queen uses Lavos to try and destroy you.
  60. 60
    Have Crono go up and talk to Schala, then walk towards Lavos.
  61. 61
    Crono will be destroyed to stop Lavos for now.
Tips
  • Crono's *Luminaire is effective against enemies in the room with the first set of stairs.
  • It is recommended to have Frog and Lucca in your party for later sections.
  • Be prepared for multiple enemy encounters during the elevator descent.
  • Refer to the Bosses section for strategies against Dalton's Golems.
  • Rune Blade (for Frog)
  • Aeonian Suit
  • Shockwave (for Lucca)
  • Demonslayer (for Frog)
  • Sonic Bow (for Marle)
  • Kaiser Arm (for Robo)
  • Empyrean Blade
  • Aeonian Helm
  • Elixir

100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content