The most obvious aesthetic difference is the branding. The Japanese version uses the classic Mario Tennis logo with a "GC" subscript, while the Western releases used the Power Tennis moniker. The menu layouts, fonts, and even some of the character select screen animations have subtle color timing differences.
ISOs, or game images, are digital copies of games that can be played on emulators or consoles with custom firmware. For , ISOs have allowed fans to continue playing and enjoying the game long after the GameCube era. Mario Tennis GC GCN GameCube ISO -JPN-