When the community transitioned to playing online via Slippi and the Dolphin Emulator , they needed a single, unified version to ensure everyone had the exact same frame data and mechanics. The (the final North American release) was chosen because it was the most common and "complete" retail version of the game. 2. Modding and Training Tools
: Essential community mods, such as the 20XX Training Pack and Slippi , are specifically designed to run on a v1.02 ISO base. melee iso 1.02