This project aims to design and implement a 2DRPG game card battle part based on the Unity3D engine. The game will cover the core gameplay of card collection, card group construction, and combat system, and this game is a creative game combining the two types of traditional RPG and card games. This project first introduces the related technology and theoretical basis of game development and then describes the game’s design idea, architecture, and implementation process in detail. Finally, a series of tests and evaluations are carried out to verify the playability and stability of the game. The project provides a new idea and method for game development and specific reference value for further exploring the 2DRPG game card battlefield. In general, this paper introduces the author’s participation in team development and the realization of the function and role of each module in the project.