Beginner
Data Village
SELECT, WHERE, ORDER BY, LIMIT, and your first INSERT, UPDATE and DELETE.
★ Free · Works offline · No account
Learn SQL by playing, not memorizing.
QueryQuest turns SQL into a quest. Build queries from blocks, fix broken ones, guess the output and crack data mysteries across three illustrated worlds — on your phone or your PC, even without internet.
3illustrated worlds
45stages to clear
8ways to play
0 MBdata needed to play
Your journey
From your first SELECT to subqueries
Take the placement test or start from the beginning. Each world ends with a Level Test that unlocks the next one.
Intermediate
Join Forest
JOINs, GROUP BY, HAVING and aggregates. Connect tables like paths between trees.
Advanced
Query Citadel
Subqueries, CASE, indexes and table design. Then solve the hardest data mysteries.
Ways to play
Not another quiz app
Every answer runs on a real SQLite database, so you see exactly what your query does — row by row.
SELECT name, AVG(grade) FROM students GROUP BY section HAVING AVG(grade) > 86;
Query Puzzles
Tap SQL blocks into the right order. Perfect for your first queries.
Fix the Bug
Find the wrong keyword, see the error and the expected output side by side.
Predict the Output
Read a query and pick the rows it returns. Trains you to think like the database.
Query Visualizer
Watch FROM, WHERE, GROUP BY and SELECT filter the table step by step.
SQL Case Mysteries
Query CCTV logs, receipts and records to catch the culprit. Then accuse with proof.
Sandbox & Table Builder
Write any query in a real editor, or design tables with keys and constraints.
Daily & Timed
Keep your streak with a daily challenge, or race the clock in timed runs.
Badges, Ranks & XP
Earn stars and XP, rank up from Query Rookie, and collect badges.
For teachers
Weak-topic practice, a notebook, a PDF progress report and a PIN-locked instructor mode.
Inside the game
Made for small screens and short breaks
Swipe through. Every screen is designed for one-hand play, with big tap targets and friendly error messages.
Download
Get QueryQuest — it's free
One download, then play anywhere. Your progress stays on your device.
Android
APK · 16.7 MB · Android 7.0 or newer
- Tap Download APK below.
- Open the file. If asked, allow Install unknown apps for your browser or Files app.
- Tap Install, then open QueryQuest.
SHA-256: 8c024b21e722273988e3d3d3657914986a0ce6cbd88324809878d1a582cd2dc8
Windows PC
EXE · 11.1 MB · Windows 10 or 11 (64-bit)
- Click Download for Windows below. No installer needed.
- Open QueryQuest-Windows.exe. If SmartScreen appears, click More info → Run anyway.
- Pin it to your taskbar so it's always one click away.
SHA-256: 146cce98e450c9aff55194e7c1865f9f2ba769723a0f363dbc21e1157f5db0fe
FAQ
Questions
Do I need internet to play?
No. Everything — lessons, databases and the SQL engine — is inside the app. You only need internet to download it once.
Is it really free?
Yes. No ads, no account, no in-app purchases. QueryQuest is a capstone project made for students.
Which SQL does it teach?
SQLite, which uses the same core SQL you'll find in MySQL, PostgreSQL and SQL Server: SELECT, JOIN, GROUP BY, subqueries, CREATE TABLE and more.
Why does my phone or Windows warn me about the file?
The app is not from the Play Store or Microsoft Store, so your device asks before installing it. That is normal for apps downloaded from a website. You can compare the SHA-256 code above to make sure the file wasn't changed.
The Windows app shows a blank window.
QueryQuest uses Microsoft Edge WebView2, which comes with Windows 10 and 11. If it was removed, install the free WebView2 Runtime and open the app again.
Will my progress carry over between phone and PC?
Progress is saved on each device separately. Teachers can export a PDF report from the Profile tab.