The grammar game that actually sticks

Learn by playing. Remember forever.

Wrong answers never punish you — they go straight to your Error Log.

Start the Quest See how it works
12 grammar worlds 92 phases no placement tests
Verb Tenses world
Mistakes go straight to your Error Log
★★★Phase unlocked — keep going!
Inside the app

Your journey, one quest at a time

Four acts of adventure — straight from the app's opening story.

GramLingo quest begins
GramLingo learning adventure
GramLingo world exploration
GramLingo mastery
3 steps

How it works

No syllabus, no drills — just a quest from confused to confident.

1
Gramlin thinking

Pick a world

Choose from 12 grammar worlds — clauses, tenses, conditionals and more.

No placement test needed
2
Gramlin studying

Play & learn

Instant feedback with clear explanations — every option teaches you why.

Every wrong answer explained
3
Gramlin celebrating

Level up

Earn stars, unlock phases, and let your Error Log build your review.

Auto-built review from your mistakes
Curriculum

12 Grammar Worlds

From relative clauses to advanced expressions — every module is a new adventure.

Drag to explore →
Relative Clauses

Relative Clauses

who · which · that

Prepositions

Prepositions

in · on · at

Verb Tenses

Verb Tenses

past · present · future

Conditionals

Conditionals

if · would · could

Passive Voice

Passive Voice

is done · was made

Reported Speech

Reported Speech

she said that…

Modals

Modals

can · must · might

Articles & Determiners

Articles & Determiners

a · an · the

Conjunctions

Conjunctions

and · but · because

Verb Patterns

Verb Patterns

enjoy doing · decide to do

Sentence Structure

Sentence Structure

subject · verb · object

Advanced Expressions

Advanced Expressions

idioms that impress

How it feels

See it in action

Straight from the game — a real question, real feedback, and where your mistakes go next.

Phase 2: Subject Relatives Question 2 of 7
Gramlin the mascot, thinking

The woman ___ called me is my manager.

Awho
Bwhich
Cwhere
Dwhom
Next →
Gramlin the mascot, studying
Error Log
Auto-built from every mistake
Relative Clauses · Phase 2#2
The woman ___ called me is my manager.
Your answer which
Correct who
↻ Retry this phase
Relative Clauses · Phase 5#4
The train ___ arrives at 3 PM is delayed.
Your answer when
Correct that
↻ Retry this phase
Every miss lands here automatically — grouped by phase, one tap to retry, exportable as PDF or Markdown.
Different

Why GramLingo

Most grammar tools test you. GramLingo plays with you.

🎮

No tests — the game is the test

You learn by mistakes, not by being graded. No placement tests, no drills, no pressure — just play and the game figures out what you need.

💡

Every mistake teaches

Instant feedback with per-option explanations — every wrong choice explains why it's wrong, so you never make the same mistake twice.

📖

The Error Log

Your personal review log, auto-built from your exact mistakes. It resurfaces items at spaced intervals — right when you're about to forget them.

In short

What GramLingo is

GramLingo is a grammar learning game that runs in any modern browser. It teaches English grammar as a quest: 12 grammar worlds covering relative clauses, tenses, conditionals, passive voice, reported speech, modals and more, across 92 phases. There are no placement tests and no scores — every wrong answer is explained option by option and filed automatically in an Error Log that resurfaces at spaced intervals. The interface switches between English, 中文 and Español at any point in a lesson. The first grammar world is free, with no credit card and no signup wall.

What it is

A grammar learning game that runs in a web browser — no download, no app store.

Curriculum

12 grammar worlds and 92 phases, from relative clauses to advanced expressions.

Method

No placement tests: the game is the test, and every wrong answer is explained and logged.

Error Log

Mistakes auto-build a personal review log, grouped by phase and resurfaced at spaced intervals.

Languages

English, 中文 and Español, switchable at any point, including mid-lesson.

Exam relevance

The 12 worlds cover the grammar points tested in IELTS, CET-4 and gaokao.

FAQ

Questions, answered

Is GramLingo really free?
Yes — the first grammar world is completely free, no credit card, no signup wall. You can start playing in under 10 seconds. Future worlds may have a small unlock cost.
What makes it different from Duolingo or grammar textbooks?
Textbooks explain rules then test you. Duolingo drills vocabulary with gamified streaks. GramLingo does neither — it turns grammar itself into a quest. Every question teaches through instant per-option feedback, and your mistakes auto-build a spaced-review Error Log. No drills, no flashcards, no "you lost your streak" anxiety.
Can I learn in my own language?
Yes — switch between English, 中文 and Español anytime, even mid-lesson. Explanations adapt to your language instantly. Perfect for learners who think in Chinese or Spanish but want to master English grammar.
I'm preparing for IELTS / CET-4 / gaokao — will this help?
Absolutely. The 12 worlds cover the exact grammar points these exams test — relative clauses, conditionals, passive voice, modals, and more. Each world's phases get progressively harder, matching exam difficulty. Your Error Log becomes a targeted study guide for the gaps the exam will expose.
Does it work on my phone?
Yes — it runs in any modern browser on phone, tablet, or desktop. No download, no install, no app store. Your progress syncs across devices automatically, so you can start on your phone and finish on your laptop.
How much time do I need per day?
Five minutes is enough. The quest saves your place automatically, and your Error Log builds itself from the questions you miss — no extra study sessions needed. Consistency beats intensity: 10 minutes daily will outperform a 2-hour cram every time.

Ready to master grammar?

12 worlds. 92 phases. Zero tests. Start the Quest.

Start the Quest →