# 7.2.2.2 Treasure Chest Reward Rules Every PvP victory earns a star, and accumulating five stars allows advancement to the next tier. Upon progressing to a new tier, a treasure chest is awarded. The treasure chest contains a random selection from the following four types of rewards. **1. Tank coin WIRA** * The total amount is 10 billion, no additional issuance * Tank game ecology accounts for 50%, or 5 billion **2. NFT fragments** * NFT fragments can be synthesized to cast the main NFT, including tank image NFT skins * The minted main NFT can add bufF to the user's game skin. You can also go to the official website to participate in staking activities to obtain staking income. **3.IGS** * 2,000,000 IGS will be used for randomly bursting game treasure chests, while supplies last. **4. USDT** * A total of 10,000 USDT, while supplies last --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://igames.gitbook.io/igames-white-paper/7.-igames-games/7.2-tank-glory/7.2.2-economic-model/7.2.2.2-treasure-chest-reward-rules.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.