Expansion Help!

[Sirskipptillion]

2. Get a new game.

You can also try an entirely new variety of Munchkin, such as Munchkin Zombies or Super Munchkin. These are full, complete games on their own. Most of them also play nicely when mixed with one another, so if you wanted to try steampunk cowboys, you can mix Munchkin Steampunk with The Good, the Bad, and the Munchkin for a steam-powered Wild West game.

Sorry, my understanding is that new games have similar rules and share base cards with original munchkin, but have very different themes, similar to a really big booster, is that close to right, or are they something completely different?