Mystical Ninja Starring Goemon
Sent in by Francis S. Rogers Jr. (Franny)
Sebensei: The Great Computer Robot would be a big octagonal thing
with a dome on top sitting in the middle of a big 2-level room. It
would shoot green laser-like sparks at you from an antenna on top
of it's dome on top of it, and use a green force field to protect itself.
To beat, you would have to go in the room, go down to the 1st floor,
watch Sebensei raise the stairs, and fight. Then, you'd have to wait
for Sebensei to power down the force field while dodging its sparks.
You could attack now using Goemon's Chain Pipe. Then, whack him
when he's safe. He blows up after 6 hits.