This ROM hack of Mega Man X2 for the SNES offers a modified version of the game, potentially with new content and changes to the gameplay loop. The original Mega Man X2 offered a compelling campaign and challenging encounters.  The 'Proto Edition' suggests it may be an early version or a significantly altered modification of the game, which may result in differing difficulty, changes to the level design, enemy placement, or overall story progression.  The original game was developed and published by Capcom. This hack was created by a member of the fan community.

Mega Man X2: Proto Edition

Mega Man X2 - Zero Playable with Triple Attack (Clasic)