In Terraria, when creating a new world, you can choose between three different sizes: small, medium, and large. Each size affects gameplay differently, influencing the distance between key landmarks, the amount of resources available, and the difficulty of traveling across the world. Here’s a detailed comparison of each world size and what they entail:

Small World

• Dimensions: 4200 blocks wide by 1200 blocks tall.
• Features and Benefits:
  • Faster Exploration: Smaller worlds mean quicker access to various biomes and faster travel times between different areas like the Dungeon, Jungle, or Ocean.
  • Easier Management: Managing events like invasions or finding floating islands is simpler due to the condensed nature of the world.
  • Ideal for Solo Play: Small worlds are often preferred by solo players or those looking for a quicker game progression.

Medium World

• Dimensions: 6400 blocks wide by 1800 blocks tall.
• Features and Benefits:
  • Balanced Exploration: Offers a middle ground in terms of exploration and resource availability. There’s more to explore than in small worlds but without the vastness of large worlds.
  • More Resources: Medium worlds provide more resources than small worlds, making them suitable for multiplayer sessions or players who want a bit more from their world without being overwhelmed.

Large World

• Dimensions: 8400 blocks wide by 2400 blocks tall.
• Features and Benefits:
  • Extensive Exploration: Large worlds feature the most extensive exploration spaces, with long distances between key points of interest.
  • Increased Resources: They offer the largest amount of resources, including more ores, chests, and unique biome sizes.
  • Challenging and Immersive: Best suited for multiplayer games or players seeking a long-term, immersive experience. Traveling across a large world can be challenging but rewarding.

Additional Considerations

• Biome Sizes: Larger worlds mean larger biomes. This can affect how you plan your settlements, resource gathering, and how you tackle events like the spread of Corruption or Crimson.
• Spawn Rates: Larger worlds might have different enemy spawn rates or distributions compared to smaller ones, affecting how events like the Blood Moon or Solar Eclipse play out.
• Difficulty in Managing World Corruption/Crimson: In larger worlds, managing the spread of Corruption, Crimson, and Hallow can be more challenging due to the increased area they can cover.
• More Room for Building and Projects: Larger worlds provide more space for ambitious building projects or intricate farms.

Choosing the Right World Size

The choice of world size should be based on your goals in the game:

• Solo players may prefer small or medium worlds for manageable distances and quicker progression.
• Multiplayer games benefit from medium or large worlds due to the increased resources and space needed to accommodate more players.
• Builders and long-term players often opt for large worlds due to the greater area available for elaborate projects and expansive bases.

Ultimately, the best world size in Terraria is the one that matches your playing style, whether you’re looking for a focused, faster-paced game or an expansive, resource-rich environment to explore with friends.