The simple crafting system automatically lists any item that you have the materials to craft. First priority is to set up a base before night fall hits in order to protect yourself from roving zombies and eyeball monsters. You can craft many items for your home, including doors, walls, tables, chairs and beds.
During the daytime slimes roam the land and must be avoided or dispatched with a weapon such as a sword or axe. As you gather materials you will be able to construct more powerful weapons from different ores as well as armor to protect yourself.
30 monsters are present in the game including slimes, floating eyeballs, giant earth worms and zombies.
Building a nice home will attract NPC (non-player characters) to your house to set up residence. These can include a merchant to trade with and nurses who can heal your wounds.
Terraria supports single player, multi-player servers and player vs player combat.