A trivial question...

[Rogles]

Why is it that some famicom games are published by "Namcot" and not "Namco"? are they two different companies, or did Namco change its name?

[nintendodork]

The company was originally called Namcot, and for whatever reason, they dropped the "T" and became Namco.

[Jollie]

http://en.wikipedia.org/wiki/Namcot

basically says only in japan when they were making games for the famicom they went under the moniker namcot.