Desert



The Desert is a sandy area that spawns desert monsters, cacti, and waterleaf. Each map will generally contain at least two desert areas. Drained Oceans also become deserts.

Hardmode
At hardmode Desert can be corrupted or hallowed. Both of these will be very similar to their main biomes (e.g. The Corruption or The Hallow): the music theme is the same, the mobs are the same (excepted the Dark and Light Mummies), and the background is just slightly different.

The sand will be replaced by ebonsand or pearlsand. Although their color will change, cacti still drop cactus when cut, and waterleaves are also able to grow on hallowed desert.

Making money
If a player is desperate for money, for example if they need to make a purchase but are somewhat short of Coins, deserts can be a good indirect source. Sand blocks can be crafted into Glass, which can be crafted into Mugs, which are filled at a Keg to produce Ale, which has a sell price of 20 Copper Coins each. Though the sell price is low, this is one of the only sources of coins in the game that is always readily available, as all other abundant block types have no value on their own. Also given the ratio of 1 sand=1 bottle, if you get 2 goldfish and fill a bottle up with water you can craft a goldfish bowl, selling for 20 silver.

Assuming the player carries only a Pickaxe and one other Weapon for fighting off any enemies encountered, while keeping all other Inventory and ammo slots available for sand collection: 10,500 sand blocks (42 slots x 250 max sand stack per slot) = 5,250 Glass blocks = 5,250 Mugs = 5,250 Ale x 20 Copper Coins each = 105,000 Copper Coins, or 10 Gold and 50 Silver Coins.