> For the complete documentation index, see [llms.txt](https://doc.metarun.game/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.metarun.game/metarun-economy/5.1-currencies/5.1.1.-currency-classes.md).

# 5.1.1. Currency Classes

All the currencies of Metarun are divided into soft and hard currencies.

### **a. Soft Currency**

Metarun Soft currencies can only be obtained and used inside the game but cannot be converted into $MRUN tokens. The list of soft currencies is

* GOLD 
* SAPPHIRE
* DIAMOND

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### **b. Hard Currency**

Hard currency in  Metarun means that it can be obtained inside the game, and also it can be exchanged into Metarun native tokens & $MRUN tokens through price oracles. There is only 1 type of hard currency in the game, i.e., OPAL.

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