Think about it.
The word Terraria is plural for Terrarium.
Terrariums are rectangular glass cages you keep animals in.
The world of Terraria has lots of different animals and enemies all found inside.
You also view Terrariums from the side (Think ant farm).
The world of Terraria is also 2D like viewing a chunk of land from the side.
The entire world of Terraria (or worlds) is just a giant glass cage/ant farm, and we're creatures trapped inside.
Also, if you came into this topic expecting Nicholas Cage... I'm sorry.
The word Terraria is plural for Terrarium.
Terrariums are rectangular glass cages you keep animals in.
The world of Terraria has lots of different animals and enemies all found inside.
You also view Terrariums from the side (Think ant farm).
The world of Terraria is also 2D like viewing a chunk of land from the side.

The entire world of Terraria (or worlds) is just a giant glass cage/ant farm, and we're creatures trapped inside.
Also, if you came into this topic expecting Nicholas Cage... I'm sorry.