The Isle of Cats: Kittens + Beasts is an expansion for The Isle of Cats adding 3 new expansion modules to the game. It also adds a new lesson module (I) to the game and 6 new family cards.

Each of the 3 expansion modules can be used independently with The Isle of Cats or combined in any way you wish.

Kitten module
Complexity: Easy
Compatible with: Standard mode, solo mode, family mode, and up to 6-players
The Kitten module adds more importance on being the fastest player each day and introduces new options in the form of kittens, without adding much complexity to the game.

Beast module
Complexity: Medium
Compatible with: Standard mode, solo mode, family mode, and up to 6-players
The Beast module adds ancient beasts to the game which provide early game goals while you search for lesson cards. Each beast will only be happy if it is near its friends and you will need to carefully position cat families around these creatures if they are to form friendships and score points.

Event module
Complexity: Hard
Compatible with: Standard mode, solo mode, and up to 6-players
The event module adds rule changing events to rounds 1 and 5, and ways to score points to rounds 2, 3, and 4. This provides another layer of challenge as you will need to adjust your strategies each round, and plan how to best use the rule changes to your advantage.