The IGame Class is used to obtain general game information. Can be accessed using game

It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import.
import crafttweaker.game.IGame;

Zengetter	What does it do?	Return Type	Usage
Zengetter biomes	What does it do? Returns all registered biomes as list	Return Type List<IBiomes>	Usage game.biomes
Zengetter blocks	What does it do? Returns all registered blocks as list	Return Type List<IBlockDefinition>	Usage game.blocks
Zengetter enchantments	What does it do? Returns all registered enchantments as list	Return Type List<IEnchantmentDefinition>	Usage game.enchantments
Zengetter entities	What does it do? Returns all registered entities as list	Return Type List<IEntityDefinition>	Usage game.entities
Zengetter items	What does it do? Returns all registered items as list	Return Type List<IItemDefinition>	Usage game.items
Zengetter liquids	What does it do? Returns all registered liquids as list	Return Type List<ILiquidDefinition>	Usage game.liquids
Zengetter potions	What does it do? Returns all registered potions as list	Return Type List<IPotion>	Usage game.potions

ZenScript
 Copy
//getEntity(EntityName)

//essentially the same
val sheep = game.getEntity("sheep");
val sheep1 = <entity:minecraft:sheep>;

Sets the localization.
All parameters are strings. game.setLocalization(key, value);
game.setLocalization(lang, key, value);

Returns a localized String
game.localize(key)
game.localize(key, lang)