LLM Riddles is a GPT developed by 1nano.tech. This tool, built on top of ChatGPT, is structured as an engaging challenge game designed around riddles. Users who desire an intellectual challenge can try solving intricate riddles offered by this tool. It also accommodates the requests of users who might need help with the challenges; the provision of hints is a crucial part of its functionality, which users can ask for if they find themselves unable to solve a riddle. Additionally, the GPT operates multilingually, making it a versatile tool that can engage with a wider user base. Prompt starters can be articulated both in English and in Chinese, including requests to start the game, to receive the first challenge, and to procure a hint. The LLM Riddles GPT creates an environment conducive for cognitive engagement and fun-oriented learning. However, it is important to note that the use of LLM Riddles GPT requires a subscription to ChatGPT Plus.