Abstract: The present invention is an amusement park game system and gaming method thereof, mainly applied for digital pet raising simulation game, comprising a mobile device application, a wearable device, field system, and a cloud system. After a parent downloaded the application in his/her smart mobile device, it can connect the wearable device of the child, such that the parent can use the mobile device application to assign task to the wearable device for the child to perform the task and obtain game points. Therefore, the child can use the game points on taking care of the digital pet, so as to raise his/her own digital pet. The data can be store in the mobile device application of the parent and the cloud system. The cloud system can also be utilized to update the content of the game for the wearable device, so as to enrich the overall content and enhance the variety thereof.