Rocman X looks like Mega Man and plays like a half-baked version of Power Blade, right down to the same explosions and enemy concepts.
It's also one of Sachen's last Famicom/NES games.
Unused Graphics#
Thunder Blaster Man raising his (sparkling) fists, possibly a leftover from a scrapped special move.
Level Select#
At the title screen, press Up + A + B + Select, then hold Down + B. A short tune will confirm correct entry.