there are 33 cards in the pack
There is no way to give a precise answer because they continue to add new cards to the Moshi Mash Up Cards. The Moshi Monster Online Store says "100's".
A Moshi Monster is a monster that you play with, feed, and do many activities with on Moshi Monsters, the online game.
7 or 5
179
There are 100s of Moshi Mash Up cards to collect.
Each account can only have one Moshi Monster.
The Moshi Monsters store says that there are hundreds of cards available.
There are six series of Moshi Monsters out. Adopt a Mosling is now on Moshi Monsters.com.
Paid members of Moshi Monsters can have as many moshlings as they want.
According to the Moshi Monsters web site, over 50 million Moshi Monsters have been adopted. That means there are many who have a Moshi Monster member account!
If the monster is "not on" Moshi Monsters, then it would be helpful to know which game you are asking about as there are many games that have monsters in them. If you are asking because you have a free Basic Membership account on Moshi Monsters, your monster is "on" Moshi Monsters and you do the same things as everyone else to make your monster happy. That is, tickle your monster, play games, and feed it favorite foods.
Each pack of Moshi Mash Up cards contains 6 cards, including 1 Secret Code Card.