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 improves their previous TAS by 14.91 seconds, thanks to better optimisation.