Developing a new feature for a game like (specifically in its NTSC-WBFS format) usually involves "ROM hacking" or creating "Gecko Codes" to modify the game's behavior.
: Mario Party 8 is infamous for its "pillar-boxing" (black bars on the sides) even on widescreen settings. A highly requested feature is a true 16:9 patch that adjusts the 2D assets and UI. Mario Party 8 Wii NTSC-WBFS