From Multiplay Wiki
Terraria is noted for its similarity to Minecraft and classic exploration-adventure titles such as Metroid. Basic gameplay features day & night cycles, nocturnal & subterranean attackers, world-building elements, and character advancement.
Terraria is a land of adventure! A land of mystery! A land that's yours to shape, to defend and to enjoy. Your options in Terraria are limitless. Are you an action gamer with an itchy trigger finger? A master builder? A collector? An explorer? There's something for everyone here.
Multiplay Approved Guides
TShock is a Terraria Server administration modification that runs on the open source TerrariaAPI.