You know what the funny thing is? Pirate games from the earliest era of home video games didn't even need to hack the code. And the most interesting thing about them is, they had completely original artwork, rather than scary cut and paste jobs. And they were... well... interesting.
Somehow, the translation from Popeye the Sailor Man (who is now public domain everywhere else in the world but America, ironically) to drunken, mustachioed glutton doesn't make much sense.
Now look at this Yellow Submarine-esque Generic cover for "Super-Man"
And this Even more generic game called "SupperMen"
Then there's something called "HEY! STOP!" which has to be some pirate of something..
And a generic label Spider-Man game in Chinese.
Then again, with the Atari 2600, pirating games was child's play, and a lot of garbage from tenth party publishers (giving way to some disgusting pornographic games) was constantly crapped out. That's why the NES had security chips. But the pirates found a way around them.

Somehow, the translation from Popeye the Sailor Man (who is now public domain everywhere else in the world but America, ironically) to drunken, mustachioed glutton doesn't make much sense.
Now look at this Yellow Submarine-esque Generic cover for "Super-Man"

And this Even more generic game called "SupperMen"
Then there's something called "HEY! STOP!" which has to be some pirate of something..

And a generic label Spider-Man game in Chinese.
Then again, with the Atari 2600, pirating games was child's play, and a lot of garbage from tenth party publishers (giving way to some disgusting pornographic games) was constantly crapped out. That's why the NES had security chips. But the pirates found a way around them.