Of the five possible biomes, the temperate biome is the default world type, featuring Acid Rain and all normal rock types.
Each temperate world always has a Purifier, which can be assembled from its constituent parts to purify the world. Purification takes three days, and its progress is represented on the mini-map as well as in World Search. As the world becomes purified, the acid rain turns from green to blue and damages players less. Once fully purified, the rain is no longer acidic, and inflicts no damage. At this point, compost and bulbs can begin to grow plants if they are exposed to the sky.
Temperate worlds are the default and most common type of Biome, as it is the only Biome widely accessible to both non-premium and premium players.
View the Quick Start Guide for more information.
As with all Biomes, the world exploration progress is displayed on the mini-map and World Search Menu.
Mining Skill level 4 is required to mine all layers in Temperate Biomes.
Beginner's Tip: Craft or trade for an Acid Shield to temporarily protect against Acid Rain.
Once you have found all 7 Purifier parts in Ecological Crates, you can then click on the Purifier itself to activate it. The world will begin to slowly reduce acidity until it reaches 0% acidity. At this point, acid rain is replaced with non-damaging rain and new creatures will appear.