Smart contracts automate the execution of game rules without intermediaries. They ensure transparency, security, and immutability of transactions. In blockchain games, these contracts allow players to truly own their digital assets. Developers integrate this technology to enhance trust and prevent fraud. The blockchain eliminates risks of data manipulation and alteration. Smart contracts facilitate exchanges between players and create automated reward mechanisms. Their adoption is transforming the gaming industry and offering a new decentralized economy. These innovations pave the way for fairer gaming experiences. This article provides an overview.