> For the complete documentation index, see [llms.txt](https://docs.heroestd.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.heroestd.io/gameplay/upgrade-system/evolution.md).

# Evolution

Evolution feature (in upgrade) updated in v101. Heroes will now become stronger with each star level evolution. The base stats will grow stronger as the hero gets more stars.

<figure><img src="https://2009654069-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mkm6KBQ9fi4pfSq4qSI%2Fuploads%2F1Fv7TNpDpG77ipEJsMB5%2F306668481_627863255378415_8712905430075849022_n.jpg?alt=media&amp;token=0498f0a3-672b-484d-875c-08dbe3e53f1f" alt=""><figcaption></figcaption></figure>