The purpose of this study was to design and build a 3D survival game "fun sciences adventure" using Unity 3D. The game is functioned to support the science learning process by utilizing game technology that is currently developing in the form of implementing artificial intelligence in it. In this study, the method used is the waterfall method (Somerville, 2011) which has 5 stages of research and the implementation of the finite state machine method to design the game in detail so that the manufacturing process runs optimally. The results of this study have developed a "fun sciences adventure" game that is suitable to be played and applied in science learning by obtaining testing criteria in the visual aspect of 90%, the objective aspect of 85%, and the user-friendly aspect of 88%. The conclusion in this research is that the game fun sciences adventure runs well, where this game can be used as a fun alternative learning tool for basic science for fifth grade elementary school students.