Cat Combo

Cat Combo is a feature added in version 4.0.2 of Nyanko Daisensou and version 3 of The Battle Cats, available after completing Chapter 2. When using a combination of certain Cats within the first 5 entries (top row) of a Slot, additional effects will appear in battle. The Cats do not need to be in a fixed order and having multiple combos on the same slot is possible. All discovered combos can be seen in the "Cat Combo Picture Book" (にゃんコンボ図鑑 Nyan konbo zukan), from Equip Screen. Currently, there are 95 combos in the English version.

Original
The first set of combos are unlocked by default. The final 11 were added more recently to the game.

Additional Set 1
An additional 29 combos are unlocked after completing Into the Future Chapter 1.

Additional Set 2
A further 20 more combos were added in version 4.2 of Nyanko Daisensou and version 3.1 of The Battle Cats and are unlocked after completing Into the Future Chapter 2.

Additional Set 3
A further 18 more combos were added in version 4.3 of The Battle Cats and are unlocked after completing Into the Future Chapter 3.

Additional Set A
These three combos are unlocked after reaching User Rank 1450.

Additional Set B
These three combos are unlocked after reaching User Rank 2150.

Additional Set C
These three combos are unlocked after reaching User Rank 2700.

Unreleased (EN version only)
These combos, and the cat that forms it have yet to be released on the English Edition of Battle Cats.