A lightning-fast one-thumb karate arcade game. Read the flash, strike the right way, and keep the combo alive as the dojo speeds up.

A flash lights up. Swipe the matching way before it fades. Miss one and it’s over — so read fast and trust your reflexes.
Swipe left to snap a jab at a flash on your left.
Swipe right to fire back the other way.
Swipe down-left to drop a low roundhouse.
Swipe down-right and keep the combo climbing.
Earn tokens as you play and unlock a cast of characters — each with its own set of outfit colors to mix and match.
Master MeiRed · 5 colors
The NinjaRed · 5 colors
The PandaRed · 5 colors
The RobotGold · 5 colors
The FoxRed · 5 colors
Disco KingGold · 5 colors
The AlienBlue · 5 colors
The MonkeyRed · 5 colorsEvery fighter comes in five outfit colors. Hover one to see them warm up.
Swap the backdrop behind your fighter — from a lantern-lit dojo to lava, candy land, or the deep sea, with more on the way.
Post your best run to the Game Center leaderboard and chase the top spot.
Scores, tokens and unlocks follow you to every iPhone signed in to your Apple ID.
No tracking, no personalized ads, and a G-rated experience by design.
Prefer a clean run? A single purchase removes all ads for good.
Every round earns tokens toward new fighters, outfit colors and arenas.
Game over in a flash — and one tap drops you straight back into the fight.
Grab Fun Ku, warm up your thumb, and go for the leaderboard.