Reactiv - Reaction Challenge

New: Hard modes, 19 achievements and Chaos with three-dot levels. Race to level 50, beat your fastest reaction and climb the leaderboards!

How fast are your reactions? Find out with Reactiv – the simple, addictive reaction challenge.

Wait for "Go!", then tap the dot as fast as you can. Beat the target time to clear the level – but every level the target gets tighter, the dot gets smaller and, from level 20, it starts to hide in the background. How far can you go before you're too slow?

FOUR MODES TO MASTER • Single – one silver dot. Pure, raw reaction speed. • Double – two dots. Hit them both before the clock runs out. • Colour – watch for the colour called after "Go!" and tap only that dot. Decoys will catch you out! • Chaos – every level is a surprise: double, colour, double colour, or three dots at once – three silver, or three of the called colour among extra decoys. Stay sharp!

Start with Single and unlock each new mode by reaching level 20.

HARD MODE Reach level 30 in any mode to unlock its Hard version: less time on every level, and a single wrong tap ends the run. Hard has its own leaderboards.

50 LEVELS, AGAINST THE CLOCK Each mode has 50 levels. Your run is timed from the very first "Ready!", so it isn't just about surviving – it's about speed. Set your fastest time to level 20 and your fastest time to complete all 50.

19 ACHIEVEMENTS From your first tap to clearing every mode on Hard: react in under 200 ms, clear 20 levels without a stray tap, master all 50 levels of each mode and become a Reactiv Legend. Achievements sync with Game Center.

CHASE YOUR BEST • Fastest reaction, fastest to level 20 and fastest to level 50 – tracked for every mode, Regular and Hard • "New High Score" and "New Best" celebrations with confetti • Game Center leaderboards for every mode – see how you rank against players around the world

DESIGNED TO PLAY ANYWHERE • Clean, modern look on phones and tablets • Quick rounds – perfect for a spare minute • Play offline – leaderboards and achievements sync when you're back online

Reactiv is free to play with ads. A one-off "Remove Ads" purchase removes all adverts for good, and Restore Purchases brings it back on a new device.

Ready? Go!