# Ranking System All types of Space Warriors can be upgraded to a maximum of 5 levels. Upgrading in each level requires 3 NFT Cards of the same type of unit to perform a genetic transplant. All 3 units will be destroyed after the process is complete. The success rate of each upgrade depends on the level of the upgrade by a total of 5 levels which are: 1. **Crewman** – A fundamental ranking for every Space Warrior. 2. **Lieutenant** – The second Ranking, upgrade bonus stats in every aspect with a 60% success rate. 3. **Commander** – The third Ranking, significantly upgrade bonus stats in every aspect with a 30% success rate. 4. **Captain** – The fourth Ranking, notably upgrade the fighting stats with a 20% success rate. 5. **Admiral** – The highest Ranking, with the bonus of the supreme commander which is almost invincible with a 10% success rate. --- # 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://ecio-space.gitbook.io/ecio-white-paper/game-characters/character-guide/ranking-system.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.