Free English Practice Game
Error Spotter - Find Grammar Mistakes in Real Sentences
Error Spotter trains you to notice grammar mistakes inside normal English sentences. This is different from memorizing rules in isolation because you have to read the full sentence, understand the meaning, and identify the word or phrase that breaks the grammar.
The game is especially useful for learners who can understand English but still make small errors while speaking or writing. By spotting mistakes repeatedly, you build the habit of checking tense, subject-verb agreement, prepositions, articles, and sentence structure before you answer.
Error Spotter
Error Spotter
Find the mistake!
Tap the incorrect word in each sentence, learn the correction, and sharpen your English editing skills!
How to Play
- Read the sentence once for meaning before you start looking for the mistake.
- Tap or select the part of the sentence that contains the grammar error.
- Choose the correction or review the explanation after each question.
- Continue through the set and track which error types appear most often in your answers.
What You'll Learn
- How to notice common English mistakes in context instead of guessing from isolated rules.
- Why errors happen in tenses, articles, prepositions, word order, and agreement.
- How to edit your own spoken and written English more confidently before important situations.
Who Is This For?
This game is ideal for intermediate learners, exam candidates, job seekers, and anyone who writes emails or messages in English. It also helps advanced beginners who know grammar rules but struggle to apply them quickly.
If you often ask whether a sentence sounds right, Error Spotter gives you repeated practice with the exact skill you need: finding the one part that makes the sentence incorrect.
Tips to Score Higher
- Check the verb first because tense and subject-verb agreement errors are very common.
- Look for time words such as since, for, yesterday, already, and will; they often reveal the correct tense.
- Read the corrected sentence aloud so your ear starts recognizing natural English patterns.
- Keep a short list of the error types you miss and revise those rules after each round.