Super Mario All-Stars + Super Mario World Improvement is a ROM hack of Super Mario All-Stars and Super Mario World, combining elements from both games for the Super Nintendo Entertainment System. Its development history involves a ROM hacker or a team of hackers. The gameplay would involve a blend of the classic Super Mario Bros. titles from Super Mario All-Stars with the enhancements and possibly new content from Super Mario World. This would likely entail new levels, graphics, or even alterations to the core game mechanics. The original Super Mario All-Stars was developed by Nintendo.

Super Mario All-Stars + Super Mario World Improvement

Super Mahjong Taikai (Japan) (Rev C)