Super Metroid Redesign is a game hack. In 2004, programmers collaborated to create a "fuller" Super Metroid, which eventually became Super Metroid Redesign.
The gameplay is very similar to the original Super Metroid, but some brand new additions have been made. Falling speed has been increased and two upgrades for Samus Aran have been combined: the Spring Ball is now packaged with the High Jump Boots. Minor realism has also been added to the game in its wall jumping aspect. For example, if a wall is jagged and rocky, Samus can easily wall jump on it because of the grip, though if a wall is slimy and smooth, Samus will have trouble wall jumping due to the lack of grip.
The plot of Super Metroid Redesign is very similar to the plot of Super Metroid, though with some extra storylines.