> For the complete documentation index, see [llms.txt](https://captain-tsubasa-rivals.gitbook.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://captain-tsubasa-rivals.gitbook.io/en/free-to-play/basic-rules.md).

# Basic Rules

When you newly join the game, you will receive a free "Ozora Tsubasa" player NFT.

This free "Ozora Tsubasa" player NFT has 1/10 the performance of other player NFTs.

* $TSUBASAUT can be earned in RIVALS mode. 
* $TSUBASAUT required for development, etc.

The following conditions are set as other restrictions. 

* Minting is not allowed based on this NFT. 
* You can use this NFT as a partner for minting, but it will disappear when you use it.

Let's experience the RIVAL mode first by using the free player NFTs!