Terraria

Terraria is an action-adventure/RPG indie game released by independent game studio Re-Logic available via the Steam Store. The game features exploration, crafting, construction, and combat with a variety of creatures in a randomly generated 2-D world. Released for PCs on May 16, 2011, the game is estimated to have sold about 50,000 copies during its first day of release, with over 17,000 players online at the same time during the first day’s peak.