The article examines the general characteristics of the GPSS simulation modeling system. Researching the topic is relevant because it is essential for comprehending and effectively utilizing a fundamental tool in the realm of simulation modeling. GPSS (General Purpose Simulation System) has been a prominent simulation language and environment for several decades, serving as a key instrument for modeling and analyzing complex systems across various domains. It is noted that the GPSS World simulation system is a modern and powerful tool for research and analysis of various systems, in particular in the field of mass service systems. Through its development history from the original GPSS to the latest version GPSS World, it has acquired a number of improvements that make it unique and highly effective. This system has a high level of interactivity, extensive functionality and the ability to model both discrete and continuous processes. Visualization and animation tools built into the system facilitate convenient observation and analysis of simulation results. Exploring the general characteristics of GPSS is essential for several reasons. Investigating the fundamental characteristics of GPSS provides insights into its underlying principles, methodologies, and computational mechanisms. By comprehensively studying the features and capabilities of GPSS, researchers can identify opportunities for enhancing its performance, scalability, and usability. GPSS offers a range of modeling constructs, simulation controls, and statistical analysis tools. Exploring its general characteristics allows researchers to uncover the full spectrum of modeling capabilities and adapt them to diverse application scenarios. As simulation modeling evolves, GPSS continues to evolve alongside new methodologies, techniques, and technologies. Investigating its general characteristics facilitates integration with advanced modeling approaches such as agent-based modeling, discrete-event simulation optimization, or hybrid simulation paradigms. Researching the general characteristics of GPSS contributes to educational initiatives in simulation modeling and operations research. It provides valuable content for instructional materials, textbooks, and courses aimed at introducing students to simulation concepts, programming languages, and best practices.