Casual Games

Split Second - Original

In a split second — what changed?

Nine numbers appear on a 3×3 board for a moment, then the screen blinks. When they come back, exactly one number has changed. Find it and tap it — this is Chalna's signature game. Levels 1–3 use only numbers from 1 to 15, so it's an easy start, and the range grows as you level up.

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No install, no sign-up — starts right away

At a glance

Players: 1 (take turns to compare scores)
Ages: 6+
Play time: About 1–3 min per game
Levels · Modes: One mode (3 lives; numbers start at 1–15, widen by 10 per level from level 4, and reach 1–100 at level 12; look time drops from 3s by 0.25s per level, down to 1s)

How to play

Tap Start and nine numbers appear. Look carefully while the bar shrinks.
When time is up, the screen is covered for a moment and then comes back.
One number changed in the meantime. Find it and tap it.
Get it right to move up a level; get it wrong and you lose a life. The game ends when all 3 lives are gone.

Tips

Instead of memorizing each number, try to take in the whole board at once, like a snapshot.
Once the number range grows at higher levels, remember the stand-out numbers first (100, 1, or doubles like 77) — they make comparing easier.
At higher levels a number may change into a similar one, like 47 becoming 74. Check the last digit too.

What it practices

Instant memoryPractice holding a scene you only saw for a moment.

Spotting changeFind what's different between two scenes that look almost the same.

FocusAs the look time gets shorter, you need to focus on the moment.

Great for

Anyone who likes short, tense games
Families and friends who want to see who reaches the highest level
Everyone from kids who know their numbers to seniors

Good to know

When a screen blinks for even a moment, people often miss a change right in front of them. Psychologists call this 'change blindness' — it's why the game looks easy but is surprisingly tricky. The answer cell shows both the old number and the new one.

Split Second - Original · Play now →