Super Metroid Z Factor hack is a complete make over of planet Zebes level-design wise, very few rooms actually look like they used to be. The planet is a little bigger now, it still relies on the original region structure but laid out differently. The game-play is unchanged, no new abilities or stuff like that.

However, theyre numerous small ASM changes and tweaks, mainly on PLM and enemies so as to keep the player interested in exploring. Item progression and item count has been sightly altered. Sequence breaking is also possible to some extent (might not be as permissive as SM tough)

This is NOT a hard hack but more difficult than the original game. Special/advanced techniques are NOT required to beat it. If youre not used to performing shine-spark maneuvers as well as the mid-air morph ball, you may have trouble getting some places later in this hack.