> For the complete documentation index, see [llms.txt](https://doc.thetanarena.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.thetanarena.com/gameplay-1/heroes-upgrading.md).

# Heroes' Upgrading

Upgrading heroes is essential and brings great benefits to owners, including increased strength and gTHC Battles.

**Heroes' upgrading benefits:**

* Increase hero stats by +1.5% at each level 
* Increase gTHC Battles and Win bonus, as shown on the following table

![](/files/OTChJUyj1scvgFZnx4Om)

### **Cost to Upgrade**

Upgrading heroes require power points and gTHG by Hero Rarity.

<mark style="color:orange;">**NOTE**</mark>: **gTHG price fluctuates with floating THC/THG exchange rate**. The price shown in the table below is <mark style="color:orange;">based on the sample exchange rate of</mark> <mark style="color:orange;"></mark><mark style="color:orange;">**0.017**</mark>

![](/files/K57RAQSMuALgbWnXRBvE)