The Battle Cats: the best Cat Combo for each effect
219 Cat Combos across 27 effects. The size tier alone sets how strong a combo is, so the best one for each effect is the biggest tier that needs the fewest Cats.
The Battle Cats has 219 Cat Combos across 27 effects. Within any one effect, a combo's size tier alone sets its value: every Small combo for an effect grants the same amount, every Medium the same larger amount, and so on. The best combo for an effect is simply the biggest tier, and among those, the one that takes the fewest Cats.
The best combo for every effect
Effects ranked by how many combos grant them. "Best value" is the largest bonus any combo for that effect grants, as the Cat Combos page lists it, with its size tier:
| Effect | Combos | Best value | Best combo (fewest Cats) | Cats |
|---|---|---|---|---|
| Starting Money Up | 18 | 1,000 (L) | Art History +2 more | 3 |
| Worker Start Level Up | 18 | 3 (L) | Offshore Accounts | 5 |
| Cannon Recharge Up | 17 | 40 (L) | Sweets | 5 |
| Unit Attack Up | 15 | 20 (L) | Yesterday's Enemy | 5 |
| "Knockback" Effects Up | 14 | 20 (M) | Cool Breeze, Hot Day | 2 |
| "Slow" Effects Up | 13 | 20 (M) | Crackshot +1 more | 2 |
| Bounty Up | 12 | 30 (L) | Cap'n Ahab | 5 |
| Unit Defense Up | 12 | 30 (L) | Cat Army | 5 |
| Research Power Up | 10 | 50 (XL) | Love and Romance | 1 |
| "Resistant" Effects Up | 9 | 30 (L) | Dynamites | 4 |
| "Weaken" Effects Up | 9 | 20 (M) | Gentlemen +1 more | 2 |
| Cannon Start Level Up | 9 | 60 (L) | Sun and Moon | 2 |
| Unit Speed Up | 9 | 30 (XL) | Cosplayers | 1 |
| "Strong" Effects Up | 8 | 30 (L) | Summer by the Sea | 5 |
| Base Defense Up | 8 | 50 (M) | Bouncing Four +2 more | 2 |
| Worker Max Up | 8 | 20 (M) | Ancient Heroes +2 more | 2 |
| "Freeze" Effects Up | 7 | 30 (L) | Liver Trouble | 5 |
| "Massive Damage" Effects Up | 7 | 10 (Sm) | Choppers +6 more | 2 |
| Cannon Attack Up | 4 | 50 (M) | Puppeteers Guild | 1 |
| "Critical" Rate Up | 3 | 2 (M) | Mo' Hawks | 2 |
| "Strengthen" Effects Up | 2 | 30 (M) | Growth Spurt | 3 |
| XP Rewards Up | 2 | 10 (Sm) | Get Rich +1 more | 1 |
| "EVA Angel Killer" Effects Up | 1 | 400 (XL) | Crazy Hearts | 2 |
| "Immune to Waves" Effects | 1 | 1 Activated | Infernal Power | 1 |
| "Kaijin Slayer" Effects | 1 | 2,500 Activated | Advent of the Almighty | 1 |
| "Witch Killer" Effects Up | 1 | 400 (XL) | Pyon Pyon for Two | 2 |
| Deploy Cost Down | 1 | 20 (XL) | Reinforcements | 1 |
Starting Money Up and Worker Start Level Up have the most combos, 18 each. 5 effects have exactly one combo, so for those there is no choice to make.
What each tier is worth
For the 11 effects that come in three or more tiers, the value at each tier. A bigger tier always grants more, never the same:
| Effect | Sm | M | L | XL |
|---|---|---|---|---|
| Starting Money Up | 300 | 500 | 1,000 | – |
| Worker Start Level Up | 1 | 2 | 3 | – |
| Cannon Recharge Up | 20 | 30 | 40 | – |
| Unit Attack Up | 10 | 15 | 20 | – |
| Bounty Up | 10 | 20 | 30 | – |
| Unit Defense Up | 10 | 20 | 30 | – |
| Research Power Up | 10 | 20 | 30 | 50 |
| "Resistant" Effects Up | 10 | 20 | 30 | – |
| Cannon Start Level Up | 20 | 40 | 60 | – |
| "Strong" Effects Up | 10 | 20 | 30 | – |
| "Freeze" Effects Up | 10 | 20 | 30 | – |
The step between tiers differs from effect to effect, so read the row for the effect you want rather than assuming a pattern. An effect with no Large or XL combo tops out at the last value in its row.
How big combos are
65% of all combos, 143 of them, need exactly 2 Cats. 19 need only one, and the largest need 5.
Small is by far the most common tier: 149 combos, 68% of the list. Only 5 are XL.
Picking combos for a lineup
Tier first, then Cat count
Two combos for the same effect and tier are worth exactly the same, so the one that uses fewer Cats, or Cats already in your lineup, is strictly better. The "+N more" in the table marks effects where several combos tie at the top value; the table shows the one with the fewest Cats, and the Cat Combos page lists the rest, so pick whichever fits Cats you already field.
One-Cat combos are free slots
A combo that needs a single Cat costs nothing extra in the lineup: fielding that Cat turns it on. Where one of those grants an effect you want, it is the cheapest combo bonus there is.
Every combo, with its Cats
All 219 combos, the Cats and forms each one needs, and the exact value are on the Cat Combos page.