This thesis provides a detailed description of the process of developing a 3D game within the Unity environment, emphasizing the integration of key components necessary for achieving a successful and engaging gaming experience. The main components of the game include the graphical environment, enemy AI, user interface, item collection system, and escape mechanisms, each playing a vital role in creating a comprehensive experience for the player. Utilizing the Unity environment has enabled not only the efficient creation of complex visual elements and interactions but also the flexibility in designing and implementing various functionalities that make the game challenging and engaging. The thesis offers a detailed insight into the development techniques that can be used in creating similar games, highlighting the importance of coordinating all game elements to achieve coherence, a balance between challenge and fun, and the overall functionality of the game. This integration facilitates the creation of an atmosphere that encourages players to explore and engage, making the game exciting and appealing.