  With the support of the blockchain systems, the cryptocurrency has changed
the world of virtual assets. Digital games, especially those with massive
multi-player scenarios, will be significantly impacted by this novel
technology. However, there are insufficient academic studies on this topic. In
this work, we filled the blank by surveying the state-of-the-art blockchain
games. We discuss the blockchain integration for games and then categorize
existing blockchain games from the aspects of their genres and technical
platforms. Moreover, by analyzing the industrial trend with a statistical
approach, we envision the future of blockchain games from technological and
commercial perspectives.
