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Screenshots

  • Thumb War – Reaction Challenge screenshot 1
  • Thumb War – Reaction Challenge screenshot 2
  • Thumb War – Reaction Challenge screenshot 3
  • Thumb War – Reaction Challenge screenshot 4

About Thumb War – Reaction Challenge

THUMB WAR – THE ULTIMATE 2-PLAYER REACTION CHALLENGE! Think you’ve got faster reactions than your friends? It’s time to put your timing skills to the test with Thumb War! Thumb War is a simple, addictive and competitive two-player game that’s guaranteed to bring out your competitive side. HOW TO PLAY 1. Place your finger on the gold button on one side of the screen. 2. Ask your opponent to place their finger on the other side. 3. Watch as the countdown begins. 4. Lift your finger as close to zero as possible. 5. The player who stops closest to zero wins the round! Sounds easy? Think again! Getting your timing just right takes concentration, quick reactions and a steady nerve. GAME FEATURES • Fun, fast-paced two-player gameplay. • Challenge friends and family on the same device. • Exciting countdown battles. • Simple controls that anyone can master. • Instant results to reveal the winner. • Great for parties, gatherings and competitive friends. • Play again and again to improve your timing. PERFECT FOR ANY OCCASION Whether you’re relaxing with friends, enjoying a family games night or looking for a quick competitive challenge, Thumb War delivers instant entertainment. No complicated rules, no lengthy setup. Just two players, one countdown and one winner! Are you ready to declare a THUMB WAR? Download now and let the battle begin!

Ratings & reviews

4.3

36 ratings

5 ★ 75% 4 ★ 6% 3 ★ 6% 2 ★ 0% 1 ★ 14%

What’s new

Version 8.0 · Updated October 22, 2026

Thumb War is back and better than ever! We’ve given the game a fresh update to make challenging your friends even more fun. WHAT’S NEW • Updated and modernised for the latest iPhone and iPad devices. • Improved gameplay and smoother countdown animations. • Enhanced sound effects and looping background music. • Improved layouts for different screen sizes. • Updated advertising experience. • Improved in-app purchase option to remove adverts. • Bug fixes and performance improvements. Same addictive gameplay, now better than ever! Challenge your friends and see who can get closest to zero!

Play today's Threadline puzzle

Draw one line through every cell, visiting the numbers in order. A free daily puzzle from Fiplay, same board for everyone. It plays right here, no download.

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App privacy

The developer, Duncan Cuthbertson, reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Usage Data: Advertising Data

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Usage Data: Advertising Data

Used for: Third-Party Advertising

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