Comprehensive numerical investigation focused on the thermal and emission characteristics of a multi-tube inverse diffusion flame (IDF) using methane as the fuel and air as the oxidizer is performed. The multi-tube IDF configuration comprises a variable number of coaxial air and fuel tubes, ranging from 4 to 9, with one central tube and the others arranged circumferentially. The study employs the k-ε turbulence model and the Probability Density Function (PDF) approach for combustion modeling. The research emphasizes the comparison of maximum temperature, carbon monoxide (CO) and nitrogen oxides (NOx) emissions, and methane (CH4) mole fraction between the conventional IDF and the multi-tube IDF configurations. It is demonstrated that the number of tubes plays a pivotal role in shaping the flow physics and temperature characteristics of these flames. Flame height calculations for all burner geometries are based on the CO fraction at the flame’s centerline. Since CO is mostly generated in the final stages of the multi-step chemical reaction involving methane, it is a suitable indicator to use for determining flame height. Multi-tube geometries are found to enhance flame temperature due to increased mixing within the flame region. Furthermore, the multi-tube IDF configuration exhibits the lowest NOx emissions. The findings provide valuable insights into optimizing combustion processes for enhanced efficiency and reduced emissions in industrial applications.