The advent of photography in the 19th century deepened artists' exploration of realism, light, and color, and Monet was a representative painter of Impressionism, seeking a new aesthetic through the change of light and time. (2023) is a digital image reproduction of Monet's light expression using Unreal Engine 5, which is used as a game engine, and was selected as the outstanding student work by Epic Games by Epic Games Unreal Challenge and 2024 GDC Unreal Creator Showcase. Based on the research of Kang Seok-beom and Jeon Byeong-ho (2006), who defined the contact point between Monet's painting and photographic medium as 'light' and analyzed the image characteristics revealed in the work, this study presented a method of classifying Monet's main light expression characteristics into four categories and implementing them as Unreal Engine 5 through the case of . The key implementation methods includes the following: first, representation of light over time, where the Ultra Dynamic Sky system was utilized to simulate atmospheric conditions and changes in solar altitude according to the time of day; second, light scattering, achieved through the Post Processing Layer to create dramatic effects of intense sunlight; third, capturing motion through photographic techniques, by employing out-focusing and full-shot techniques, implemented using a Cine Camera; and fourth, visualization, where light representation was visualized using Sequencer.