# Training Tanks At the beginning of the game, we have a free Training Tank, which is not an NFT and does not have the possibility of upgrades. This tank will only allow you to train a maximum of two koins and doesn't have the capacity to take advantage of the full potential of our koins. That’s where Training Tanks come into play, which can be acquired with utility token. Each tank can house up to four koins, whether they are ours or someone else's. As we raise the level of the pond, upgrades are unlocked, the possibility of adding Decorations, giving Snacks to the koins and even playing with them. {% embed url="" %} Training Tanks are NFT tokens, which means you can sell them at any time, or purchase them from other players. Please note that Decorations are not included in the sale, they simply disengage and return to your inventory. --- # 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://docs.koins.run/training/training-tanks.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.