Grammar Fixer

132.8K plays

Pick your age level, then spot the highlighted grammar mistake and tap the word that fixes it.

Every sentence in this game is hiding one sneaky little grammar mistake — and your job is to catch it before it slips by. A wobbly red squiggle marks the spot, four word buttons wait below, and only one of them can fix the sentence for good. That's Grammar Fixer, the KidWorld Grammar Fixer game for kids that turns "spot the mistake" into something kids actually want to play again and again — already tapped and fixed more than 100,000 times by young editors around the world, and holding onto a glowing 4.9-star rating from thousands of happy players who keep coming back for one more squiggle to squash.

📝 What Is Grammar Fixer?

Grammar Fixer shows you one sentence at a time with a single grammar mistake already highlighted with a wavy underline, plus an emoji clue above it and four word buttons underneath. Only one of those four words truly repairs the sentence — the others are the original mistake in disguise, or another wrong guess that sounds close but still isn't right. Your job is to read the sentence, notice why the highlighted word feels off, and tap the fix before your timer runs out. A full game takes you through 10 sentences back to back, and the pool is big and shuffled fresh every time, so no two playthroughs look quite the same.

🕹️ How to Play Grammar Fixer on KidWorld

Choose your level to start. Toddlers, Preschool, Elementary, or Tweens — pick the one that fits, and Grammar Fixer remembers it for you the next time you come back to play.
Read the whole sentence. The mistake is always marked with a squiggly underline, but reading the full sentence first helps the fix make sense in context.
Watch your clock. A countdown ticks beside your score for every sentence. Toddlers get the most time to think it through, and each level up trims the clock a little, so the challenge grows along with the grammar.
Tap the word you think fixes it. Four word buttons sit below the sentence — tap the one that repairs the highlighted mistake. Get it right and the sentence glows green with the fix dropped right in; get it wrong (or run out of time) and the sentence glows red before showing you the correct fix instead, so you always learn the right answer either way.
Fix it quickly for bonus points. The faster you tap the right fix, the more bonus points that round hands you — so trust your first solid instinct instead of staring at the clock.
Finish all 10 sentences for your final score. After sentence ten, Grammar Fixer adds up every point you earned, hands you a star rating, and lets you share your result or dive into a fresh set of 10 right away.

Handy tools live right above the game too: tap the fullscreen button to stretch the sentence and word buttons across your whole screen, tap the speaker icon any time you want to mute or unmute the cheerful background music, and tap the reload button whenever you'd like to jump back to the level picker and start a brand-new set of 10 sentences.

🔍 The Grammar Rules Behind Every Squiggle

Grammar Fixer isn't a random word-swap game — every mistake teaches a real rule of English, and the rules grow right alongside the levels:

Plural nouns and "am / is / are." The earliest mistakes are about adding "-s" to a noun after a number bigger than one, and matching "am," "is," and "are" to the right subject (I am, he is, they are).
Present-tense "-s" and "was / were." Next comes remembering the extra "-s" on a verb after he, she, or it ("she runs," not "she run"), plus matching "was" and "were" to a singular or plural subject.
Irregular past tense, comparatives, and irregular plurals. Elementary sentences catch trickier mistakes — verbs like "goed" instead of "went," doubled-up comparatives like "more better" instead of "better," "don't" used with he/she/it instead of "doesn't," and irregular plurals like "foot" becoming "feet" instead of "foots."
Easily-confused words. By Tweens, the mistakes get subtler: "it's" versus "its," "their" versus "there" versus "they're," "less" versus "fewer," and "good" versus "well" — the exact mix-ups that trip up even grown-up writers.

✨ Real Grammar Fixer Examples to Study

Here is a genuine sentence from each level of the game, so you can see exactly how the mistakes grow trickier as the levels go up:

Toddlers: 🐱 "I see two cat." with the squiggle under cat and the choices cat, cats, catses, catss — a number bigger than one needs the "-s," so the fix is cats.
Preschool: 🏃 "She run fast." with the squiggle under run and the choices run, runs, running, ran — "she" needs the "-s" ending, so the fix is runs.
Elementary: 🏞️ "Yesterday I goed to the park." with the squiggle under goed and the choices goed, went, gone, going — "go" is an irregular verb, so the fix is went.
Tweens: 🐶 "The dog wagged it's tail happily." with the squiggle under it's and the choices it's, its, their, it is — this sentence needs the possessive, not the contraction, so the fix is its.

Notice the pattern climbing through the levels? Toddler fixes lean on simple counting and matching, Preschool and Elementary fixes test real verb and noun rules, and by Tweens the mistakes are the same easily-confused word pairs that show up in real writing everywhere.

⭐ How to Score the Most Points

Grammar Fixer rewards both getting it right and getting it right quickly:

10 points for every correct fix. Tap the right word, no matter how much time you used, and you bank the full 10 points for that sentence.
Up to 5 extra points for speed. The more seconds you have left on the clock the moment you tap correctly, the bigger your speed bonus — up to 5 extra points on top of the 10.
Zero points for a wrong tap or a run-out clock. A wrong guess or a timer that hits zero simply reveals the right fix and moves you along — no points lost beyond missing that round's own reward, so a slip-up never drags down the rounds still ahead.
Every sentence is worth 15 points at most. Fix all 10 sentences correctly with time to spare, and you can walk away with a perfect 150-point, trophy-worthy game.

🎯 Try It Yourself: A Mini Grammar Fixer Challenge

Before you jump into the real game, warm up your mistake-spotting eyes with one practice round. Read the sentence, find the underlined mistake, and pick the word that fixes it — the answer is waiting right below.

🍕 "Last night we eated pizza." — eated, ate, eaten, eating

Think it through... then check: "eat" is an irregular verb, and the correct simple-past form is "Last night we ate pizza." If you got it, you are already fixing sentences like a Grammar Fixer champion!

🌟 Why Grammar Fixer Is Such a Perfect Fit for Kids

Every tap in this game is doing quiet, powerful work for a growing writer's brain:

It builds real editing skills, not just reading skills. Noticing that a sentence is wrong — and knowing exactly how to fix it — is a sharper skill than simply reading along, and that's exactly the muscle Grammar Fixer exercises every single round.
The timer builds confident, quick thinking. A gentle countdown teaches kids to trust their first solid instinct instead of second-guessing forever, a habit that helps everywhere from writing class to test day.
Wrong answers still teach the right lesson. Even a missed tap instantly reveals the correct fix glowing right in the sentence, so every single round — win or lose — ends with a kid seeing the properly fixed sentence.
Every mistake teaches a real, reusable rule. Unlike memorizing a single vocabulary word, a grammar rule like "he/she/it needs the -s" or "its versus it's" applies to hundreds of other sentences a kid will write later.
The four choices train sharp, careful thinking. Picking the one correct fix out of four believable-looking options — including the original mistake itself as a trap — builds real decision-making skill and careful reading.

🎮 Grammar Fixer for Every Age

What makes Grammar Fixer so special is how the exact same tap-to-fix game keeps teaching something new as a writer grows — only the mistakes, the vocabulary, and the clock change underneath:

Grammar Fixer for toddlers (around ages 2 to 4): the very first rules — adding "-s" to a plural after a number, and matching "am," "is," and "are" to the right subject — with a generous 35 seconds per sentence.
Grammar Fixer for preschool (around ages 4 to 6): the present-tense "-s" after he/she/it, and matching "was"/"were" to a subject, with 30 seconds to think.
Grammar Fixer game for elementary (around ages 6 to 10): irregular past-tense verbs, doubled comparatives, "don't" versus "doesn't," and irregular plural nouns, with 25 seconds on the clock.
Grammar Fixer game for tweens (around ages 10 to 12): the classic easily-confused word pairs — its/it's, their/there/they're, less/fewer, good/well — all under a brisk 20-second clock, genuine editing practice dressed up as a fast, fun game.

From a toddler's very first "two cats" to a tween untangling "its" from "it's," Grammar Fixer turns the quiet skill of careful editing into something every kid actually races to play. So pick your level, watch for that wavy squiggle, and get tapping — your next perfectly fixed sentence is only a few seconds away!