Catch a Brainrot Battle System - Turns, EP and the 6-Slot Team

verified · updated 2026-07-14 · Catch a Brainrot

Battles in Catch a Brainrot run turn-based on an EP (energy) budget - every attack costs a set amount, and running dry limits a rot to Charge and free moves.

The server drives each fight through a fixed sequence of steps behind the scenes.

How a turn plays out (the 9 functions)

The server sends an ordered sequence of function calls that step a fight forward, turn by turn:

SayMove - the game announces which attack is coming.
ExecuteInputClient - the attack plays out visually: a wind-up on the first step, the hit on the second.
GiveAllowance / ListenForInput - the game waits for the player to pick the next move.
LoseEnergy - the attack's EP cost gets subtracted from the pool.
ReplicateImpact - the damage lands and the health bar drops.
CatchAnim - the throw-a-ball moment: percent chance, shakes, and any Card drop.
GainEXP - the team's XP payout after a win.
FadeOut - the encounter ends.

EP (Energy) - how attacks cost

Charge costs 0 EP - the free setup move available on every brainrot. Splash costs 2 EP.

Other attacks carry EP costs that mostly track their Charge cost. Treat EP as a per-fight resource: run out, and Charge plus the free moves are all that's left.

The 6-slot team

A team brings 6 brainrots into a fight. Any of the six can be swapped in mid-battle, and all six earn XP once the fight is won.

Composition matters: mix defensive slots (Shield users) with heavy hitters (Bomb and Arm signature holders) rather than stacking pure offense.

Read the enemy's Move preference before engaging

Check the opposing brainrot's Top move and Move preference attributes before committing to a fight.

Signature means it only ever uses that one attack. Dominant means expect that move most turns, with the other slots showing up occasionally. Fallback means it mixes its whole pool with no clear favorite.

Signature and Dominant opponents are easy to counter once the coming attack is known; Fallback opponents call for generalist coverage instead.

FAQ

What are the main steps in a Catch a Brainrot battle turn?

SayMove announces the attack, ExecuteInputClient plays it out, LoseEnergy subtracts EP, and ReplicateImpact applies the damage - then the cycle repeats until FadeOut ends the fight.

How does EP (energy) work in battle?

Every attack except Charge costs EP, subtracted via LoseEnergy right before the hit lands. Charge is free; running out of EP limits a rot to Charge and other free moves.

How many brainrots can I bring into a battle?

Six. Any of the six can be swapped in during the fight, and all six earn XP once the fight is won.

What does 'Signature' vs 'Dominant' mean on an opponent's move preference?

Signature means the brainrot only ever uses that one attack. Dominant means it favors that move most turns but can still use others. Fallback means no clear favorite at all.

What happens during CatchAnim?

It's the throw-a-ball moment - the game shows the percent chance, plays the shake animation, and resolves any Card drop if the catch succeeds.

Source-checked

This guide is written and source-checked by GuideDex staff against in-game testing and primary sources. updated 2026-07-14 · GuideDex staff. Report a correction.