"The very world is at your fingertips as you fight for survival, fortune, and glory. Delve deep into cavernous expanses, seek out ever-greater foes to test your mettle in combat, or construct your own city - In the World of Terraria, the choice is yours! Blending elements of classic action games with the freedom of sandbox-style creativity, Terraria is a unique gaming experience where both the journey and the destination are as unique as the players themselves!" - terraria.org
Terraria is an awesome game and something I enjoy very much. In addition to being a moderator on the official Terraria Community Forum, I have made various applications for the game and take part in the mod community. Specifics on applications and mods I've made can be found in the Terraria section of the wiki.