What Is Fill The Gap?
Fill The Gap is a free online brain puzzle game built around one simple, satisfying idea: a shape is missing a piece, and only one of the pieces on screen truly fits. Look, decide, tap — then do it again, faster, as the timer shrinks and the shapes start looking more and more alike. It's a session you can finish in ten seconds or chase for ten minutes, on desktop or on a phone in one hand.
How To Play Fill The Gap
- Look at the shape above the answer row — it's missing one section, marked with a "?".
- Choose the one piece below that exactly matches the missing section, before the timer bar runs out.
- A correct answer adds to your score and combo; a wrong answer or timeout costs a life and resets your combo.
- Survive as long as you can across three lives, chasing a new personal best.
Key Features
- A fast, endlessly replayable core loop with rounds that take just a few seconds each.
- A combo multiplier up to x5, plus speed bonuses for lightning-fast answers.
- Difficulty that ramps smoothly — simple shapes early, rotated and mirrored lookalikes later.
- A verified global leaderboard with Today, This Week, and All-Time views.
- No account needed — just a nickname to save your score.
- A one-tap Challenge link to dare a friend to beat your score.
- Clean dark neon visuals, smooth animations, and short sound effects with a mute toggle.
Why Fill The Gap Is So Addictive
Every round of Fill The Gap asks the exact same question — which piece actually fits — but the answer gets harder to see almost without you noticing. A square is easy to spot among a triangle and a circle; a slightly rotated corner piece among three other corner pieces is a genuinely different kind of hard. That gap between "I understand instantly" and "I can still spot it in 1.8 seconds" is what keeps rounds coming. Add a combo that multiplies your score up to five times over and resets the instant you blink, and one near-miss is always worth one more run.
5 Tips To Beat Your High Score
- Look at the missing section's exact shape and angle first — not just its general outline — before glancing at the choices.
- Don't chase every speed bonus. A confident answer half a second slower beats a guess that breaks your combo.
- When two pieces look almost identical, check rotation first, then mirroring — that's usually where they differ.
- Protect your combo once it passes x5; it's worth more than any single speed bonus.
- If you're down to one life, slow down slightly — finishing the round matters more than shaving fractions of a second.
Fill The Gap FAQ
Is Fill The Gap free to play?
Yes. Fill The Gap is completely free to play in your browser on Game CMB, with no download, purchase, or account required.
How do I play Fill The Gap?
A shape appears with one section missing. Look at the 3 to 5 candidate pieces below it and tap or click the one piece that exactly matches the missing section before the timer runs out.
Can I play Fill The Gap on my phone?
Yes. Fill The Gap is mobile-first with large tap targets and works the same with touch on a phone or tablet as it does with a mouse on desktop.
How does scoring and combo work in Fill The Gap?
Each correct answer is worth 100 base points multiplied by your current combo (up to x5 at a 20-combo streak), plus a speed bonus for fast answers. A wrong answer or a timeout resets your combo to zero.
What happens if I get an answer wrong?
You lose one of your three lives and your combo resets. The game ends when you've lost all three lives, though answering ten in a row correctly can restore one life, up to the starting three.
Why does Fill The Gap get harder as I play?
Early rounds use simple, obviously different shapes. As your round count climbs, pieces start appearing rotated, then mirrored and visually similar to each other, and the countdown timer gets shorter — down to about 1.5 seconds at the hardest levels.
Is there a leaderboard in Fill The Gap?
Yes. After a run ends you can save your score with a nickname to the global leaderboard, with Today and This Week views as well as All-Time.
Do I need an account to save my score?
No. You only need to enter a nickname to appear on the leaderboard — no email, password, or sign-up required.
Can I challenge a friend in Fill The Gap?
Yes. After a run, use the Challenge button to copy a link with your score built in. Anyone who opens it sees your score and can try to beat it.
Does Fill The Gap have sound?
Yes, short sound effects for correct answers, combos, and game over, with a mute button that remembers your preference.
What kind of game is Fill The Gap?
Fill The Gap is a fast reflex and pattern-matching brain game: a quick-session puzzle game built around noticing which shape truly fits, under time pressure.