How do you play Moshi Mash up

Now, I am having exactly the same problem. My sister says you have 8 cards each, and you see what card has the highest number (mosh or mash, any card) and then the other player tries to find a higher number (mosh or mash, any card) but this can't be right. I think you see the card on top, choose mosh or mash (whatever's highest) and then the other player does exactly the same. So for instance, I have mosh 57 and mash 26 I would choose mosh and then the other player would also use mosh, which say was 36, I would win and take the other players card. I would then have another go, and another, and another, till the other player wins a card or runs out of cards. The first person to lose all their cards loses. That is how you play most collectible card games, but maybe you should try both and see which is easiest. For some reason, I can't find anything on the internet.

Follow the instructions theres bound to be some on the paket!