Arris Dome (2300 A.D.)

Upon entering Arris Dome, follow the path through the maze until you reach the main gathering area.

Speak to the old man, Doan, who expresses surprise at your arrival.

Go left and speak to Doan again; he will mention a computer and food in the basement, but robot guards block the entrance.

Talk to the people in the room, then use the Enertron to rest.

Proceed to the save point area. Before saving, you can buy items from the shopkeeper.

Save your game, then return to the main gathering area.

Go south to the center of the room and descend the ladder.

In the room below, go left and up to find two consoles that require a password.

Go left and up the ladder to the next room.

Follow the path right to the next beam, then go north and east.

Find a statue of a rat with a note; read the note.

Continue west to the far left beam, then go north to the end, and head east.

Go north on the first beam you pass to reach the next area.

Head north towards the door. A giant robot will fall, initiating a boss battle against the Guardian and two Pods.

After the battle, proceed north. Lucca will examine the rotten food, and Marle will find a note and a Seed on a dead man.

Examine the man again to read the note revealing the rat is alive. Open the chest for a Mid-Ether.

Exit the room and enter the next. You will see the rat.

Chase and attempt to catch the rat (press B to dash, A to catch). If it flees, exit and re-enter the room.

Once caught, the rat will reveal the password input method (hold L and R, press A).

Exit this room via the south exit.

Return to the room with the two consoles. Go to the right console (with the sparkling light) and input the password (hold L and R, press A). This opens a passage to a door on the right.

Enter the new room. Go up and defeat the Exterminator and two Rats.

Continue north to a chest containing a Mid-Ether.

Return to the room's entrance and go left, then up the stairs to the upper level.

Follow the high path north. Descend the stairs and defeat the enemies.

Continue south to the next set of stairs, ascend them, and follow the path north into the next room.

Go straight ahead and defeat the Version 2.0.

Go up the stairs to the upper level and follow the path around the wall.

Descend the stairs and fight another Version 2.0.

Before taking the stairs on the west wall, go north and defeat another Version 2.0.

Head east and defeat another Version 2.0.

Go north to the control panel. Input the password (hold L and R, press A) at the console to make a platform appear. The door here is sealed for now.

Go back west, then south. Take the stairs to the west and follow the path into the next room.

This room contains the supercomputer. Lucca will use it and determine your next destination is the Proto Dome.

Marle will accidentally trigger a playback of the "Day of Lavos, 1999," showing the world's destruction. She expresses a desire to prevent this future.

Leave the supercomputer room and head west.

Go south and down the stairs. Defeat the Version 2.0 and continue south to the next set of stairs.

Ascend the stairs and follow the path around, then south into the next room.

Make your way to the south end of this room, defeating enemies along the way.

Go south into the next room. Go left and down, then climb the ladder to return to the main gathering area.

Doan and the others will be surprised by your return. Marle explains their future and gives them the seeds.

Doan gives you the Jetbike Key and instructs you to go to Site 32.

Recover at the Enertron and save your game.

Exit Arris Dome via the east path.