Rockman: Install Metal is an extensive ROM hack of Mega Man 5. Like many other Mega Man romhacks of similar scope, just about everything is changed: the music, the graphics, the level design, the enemy AI, and even the weapons. The new music includes songs from games such as Live-A-Live, Little Nemo, and Battletoads. Expect settings you wouldn't expect in a Mega Man game and some subversion of established NES Mega Man level tropes.
NemoRuby in this run completes the romhack as fast as possible by abusing the Super Arrow powerup, clipping through walls and zipping across screens whenever possible.