Moop's Monster Mashup Deluxe Essentials:

• No. of players: 3 - 6
• Playing time: 60 - 120 minutes
• Age: 10

Moop's Monster Mashup Deluxe - Rules of Play says:

The marvelous magician Moop is mashing up monsters to meet the marauding munchkins. He's created bizarre new animals such as the Owligator and Kangarooster! But the heroes can fight back with their own mixed-up weapons, including Sockodiles and the Beaver Cleaver. This version of Munchkin is the craziest ever...but it's still Munchkin, so the first player to Level 10 wins!

Moop's Monster Mashup is a standalone game, but can also be combined with or any of the Munchkin games.