Map size

Map size refers to the size of a Terraria world. Upon creation, you can select either "small", "medium", or "large" for the size of the map you generate.

Dimensions of the different map sizes are as follows: (one block = two feet)

Map	Size in Feet	Size in Blocks	Floating Islands
Small	8400 x 2400	4200 x 1200	3
Medium	12800 x 3600	6400 x 1800	4-5
Large	16800 x 4800	8400 x 2400	5-6

Map Size Comparison

Different world sizes may be better suited for different purposes. Players may find that creating many small worlds may be more efficient than creating large worlds due to the amount of memory needed.

As of v1.1, the sizes of maps have been adjusted.

Advantages of Small Worlds

• Getting to specific locations like the Dungeon, Jungle and Oceans requires less walking.
• Less digging is required to reach the Underworld.
• Floating Islands are lower and therefore easier to find.
• The world saves and loads faster.
• Small worlds are more compact potentially making ores easier to find.

Advantages of Large Worlds

• There is more space to build and explore.
• There are more total chests and pots underground per world.
• There are more floating islands.
• The Dungeon is larger.
• There are more Corruption chasms and Demon Altars. This also means there would be more hardmode ores to generate.
• There are more Shadow Orbs to destroy, which drop unique and valuable items.
• The Underworld is longer, potentially giving more time to defeat the Wall of Flesh.
• There is a larger amount of ore.

Lighting engine

Bug: Size of the impassable borders that outline the map is based on the current lighting style, so if you change it by pressing F9 you can have additional space. Each border of the world is shortened by 16 blocks if you use White/Color light styles over Retro/Trippy.