Mushroom Kingdom Meltdown

This is a ROM hack of Super Mario World and the first in the Mushroom Kingdom Meltdown series. Your goal is to travel through different time periods and gather clues to the Mysterious Enemy's whereabouts to prevent him from destroying the Mushroom Kingdom with a nuclear bomb.

The story is based on a mysterious enemy who blows up the Mushroom Kingdom with a nuclear bomb. Problem is the enemy does that sometime in the future. Mario (and maybe Luigi) follow the time traveler through his time machine, picking up clues and hints of the time he is in, and when he blows up the Mushroom Kingdom. Now the Mario brothers try to prevent the explosion, even though it hasn't even happened yet...Or has it?