A subsequent version of the 'Zero Project' hack for Mega Man X3 on the SNES, v4.4 likely includes refinements or additions to the previous iteration. The original Mega Man X3 featured intricate level design and diverse weaponry.  The 'Zero Project' hacks modify the game by making Zero the playable character.  Version 4.4 might introduce new features, balance changes, or bug fixes compared to version 4.1. The original game was developed and published by Capcom. This hack was created by a member of the fan community.

Mega Man X3 - Zero Project V4.4

Mega Man X2: Proto Edition