# Buy & Merge Soldiers In the game, players use Gold to summon soldiers. Once summoned, these soldiers automatically fight monsters and gather Gold. Each soldier has its own yield rate, which increases with their level. Players can merge two lower-level soldiers to create a higher-level one. * Total cat soldiers = 250 divided into 25 types * Additionally, for each identical soldier in the team, players receive a bonus yield based on the number of identical units. For example, if Soldier A has a yield rate of 3/m and there are 2 copies of it on the field, the total yield would be 3 \* (1 + 0.1\*2) = 3.6/m. * The yield rate represents the amount of Gold earned per minute. Each time a player summons a soldier, the cost of the summoning will increase by a certain ratio. --- # 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.catvsalien.ai/features/buy-and-merge-soldiers.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.