REACTOR

Who reacts first?

The reaction duel for iOS: a stimulus appears, one clear rule applies — and only whoever taps first counts. 10 mini-games, clever bots and fair online duels for 2–4 players.

 App Store How it works
Now available in the App Store — for iPhone and iPad.
Gameplay

One rule. One button. No second chance.

Every round shows a stimulus — a colour word, a country outline, tumbling dice. Exactly one tap rule applies. The moment someone taps, the round is over for everyone.

+100

Right & first

Spot the rule and tap first to take the points — including your reaction time in milliseconds.

−50

Wrong tap

Too early, too late or simply wrong? A misfire costs you — and still ends the round for everyone.

Holding back can win

Some rounds are traps: keep your nerve and don't tap, and you hand your opponent the chance to slip up.

10 mini-games

From rapid-fire to brain work

Every match mixes your selection from ten mini-games — sometimes pure reaction, sometimes knowledge under time pressure.

🎨

Word & Colour

Do the word's meaning and its ink colour match?

🌍

Outline & Country

Does the silhouette match the country name?

👥

Population

Is the population comparison of two countries correct?

📏

Area

Which country is really bigger?

🎲

Dice Balance

Blue pips = orange pips? The conveyor keeps moving!

Mental Maths

Is the result of the sum correct?

🍒

Symbol Pair

Two symbols — identical or not?

🏁

Flag & Country

Does the flag belong to the country shown?

🔢

Flash Count

Does the number match the count of dots?

Pure Reaction

Green means tap. A false start costs you.

Game modes

Practise against bots. Win online.

🤖 Against bots

  • 1–3 bots in three difficulties — from easy-going to merciless (avg. 280 ms reaction time)
  • Mini-games, number of rounds and order freely configurable
  • Perfect for learning the rules and sharpening your reflexes

🌐 Online duel

  • 2–4 players: quick match or a private room with a 4-digit code
  • Game Center leaderboard for your online wins
  • Live standings, rematch at the tap of a button
Fair by design: rounds are decided by your local reaction time — not by whose internet is faster. A better connection gives no advantage.
Also on board

Small in scope, big on polish

🌐

6 languages

German, English, Italian, French, Spanish, Dutch — switchable live.

🏆

Game Center

Your player name comes from Game Center, your online wins land on the leaderboard.

📊

Statistics

Hits, misfires, best and average reaction time — per match and lifetime.

📳

Haptics & sound

Crisp feedback on every tap — and a pad that reacts on touch-down, not on release.