
However once defeated, the Bottomless Shimmer Bucket becomes available and can be used to create unlimited Shimmer.This means it is finite and cannot be replenished. Before defeating the Moon Lord, the Aether is the only source of Shimmer.Since Terraria's world is not dynamically updated, worlds generated pre- 1.4.4 will always lack an Aether biome.

If still no valid tile found, then continue to select random tiles inside Zone C. If no valid tile is found, then make another 10000 attempts inside Zone B.

If those attempts all failed, then the game will continue to select random tiles in another zone (Zone C), until a valid tile is found: If it failed to pass the check mentioned above, then the game will make 20000 attempts to find a valid tile inside another zone (Zone B): Then, randomly selects a tile inside Zone A. This effectively makes the selected tile in the outer 11% of the world, and at least 200 tiles away from the world's borders.The range is X1 = 200, X2 = mX × 0.11 or X1 = mX × 0.89, X2 = mX - 200, depending on the side of the world.If Y2 is more than mY - 460, then Y2 is set to mY - 460.Minimum depth is Y1 = (S + C) ÷ 2 + 50, and the maximum depth is Y2 = ÷ 3.The size of the first zone is determined as following: When selecting a random tile (X,Y), the respective coordinate will be a random number between these values: X = [X1, X2) Y = [Y1, Y2).Similarly, the height of the border between Underground and Cavern layers is C (Y = C).The height of the border between Surface and Underground layers is S (Y = S).the positive direction of X and Y axis is "left to right" and "top to bottom", respectively). The coordinates of the top-left tile in the world is (0,0), while the coordinates of the bottom-right tile is ( mX, mY), where mX is the world width and mY is the world height (i.e.

To better describe the size of the zone, we first set a coordinate system to describe tile location in a world: (all values below are calculated in tiles) Internally, the Aether biome will be considered a 200×200 rectangular area centered on the valid tile (the bottom-right tile of the four center tiles is the center), and no other structures will overlap with it. If the area passes the check, then the tile is considered valid, and the Aether biome will be generated centered on the tile.

Large world areas where the Aether can generate.
