Video games have become a market that has been expanded rapidly, however running the current games requires a computer or console of last generation, where the first has better graphics performance but demands hardware upgrades which lead to higher costs. This can be avoided with the implementation of cloud-based video games, where servers provide the power of the central and graphics processing mainly to applications with high requirements, allowing that any user with an internet connection can execute in any type of device, graphically-demanding games remotely without worrying about their hardware requirements. This paradigm is known as cloud gaming. In this paradigm there are several platforms and services, mostly private solutions, created to minimize latency experienced by the end user, but with little documentation of them. This article presents a survey about cloud gaming, in order to contribute to the documentation and show research fields of this technology.