With rapid growth of Internet，online game is flourishing with its entertainment characteristics and industrial attributes. Since 2018，online games have shown such noticeable characteristics as subdivision game genres，creation and production features as well as off-terminal trend and globalization. Among them，game developers now focus on games’ quality. Functional games provide new opportunities for this industry. 5G，cloud computing and other technologies promote the iteration and upgrading of online games，E-sport boost this sector’s development，and overseas games sale system brought new opportunity to online games.