Rockman 4 - Minus Infinity (old beta) Description: The levels, bosses, weapons and even the choice of music of the original Rockman 4 have been improved to a level that far exceeds an aesthetic standpoint - bosses have new attack patterns, weapons and moves (such as the distinguishable "desperation" moves that speed up the music and make the bosses angrier and faster).
The levels have branching pathways and hidden bosses from past Mega Man/Rockman games that won't fail to put a smile on your face (such as Shadowman robbing the Egyptian temple, or Crashman hiding in the weapons artillery of Drillman's stage), the music is very well chosen from a variety of different games, and new enemies from earlier and later games in the franchise, not found in the original Rockman 4, make an already fantastic piece of programming a platforming masterpiece.
NOTE: This is an old beta, you can play the updated version here:
Rockman 4 - Aratanaru Yabou!!