I ran across this today.

[Enmity]

I'm curious as to what its story is and what its actually worth.
The guy has some story about it being for "beta" testers and what not and sounded like a load of rubbish to me.

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[Ryaan1234]

It's a pirate/bootleg game. If I were to guess I'd say it's either Brazilian or Taiwanese (maybe from Hong Kong). In terms of value I would say $20, tops. Maybe more since NES prices seem to be insane crazy right now.

[Enmity]

lol That's what I figured but I've heard stories of some pirates carts being worth money.

[Kitsune Sniper]

Maybe it has some decent games, but I'd never pay more than $5 for one.

[buzz_n64]

Pirate carts for sure. Depending on what's on them $10-$20, or maybe worth more. Certain pirates like Super Mario World for Famicom can sell for up to $100.

[mobiusclimber]

There are definitely some NES pirates that are worth cash b/c they aren't nearly as prolific as Famicom pirates (due to there being more stringent laws in the U.S.). Can't tell you what that particular one is worth, tho. Maybe ask on famicom world's forum?

[thegamezmaster]

I've got one of those too. Doesn't have 190 different games, some are variations. But does have some games that were Japan only like the Goonies first game, Frontline, etc. Better than what we got,Goonies II. It follows the movie more. And it has tengen tetris, two player mode. May not be worth much but I like it for the games I wouldn't normally be able to have.

[Gameguy]

And it has tengen tetris, two player mode.
I have a multicart that has a prototype version of Tengen Tetris with a Nintendo copyright screen, and it plays slightly different from the released Tengen Tetris. You can find some neat stuff on some multicarts out there.