Free QA practice arena

Practice software testing on real QA battles

Hunt bugs in mini apps, solve scenario calls, answer quizzes, and get instant scores across 20 QA tracks.

AI-screened interviewsHuman-led QA rounds

  • No credit card
  • Official solutions
  • Beginner to Boss

Get launch updates and new battle drops

Saved to the launch list. No spam.

Battles
418
Tracks
20
Formats
4
Badges
25
Live pulse34 testers battling this week6 battles today34/319 still alive

// LIVE OPS

The arena is live

Real players / scored battles only

BATTLING NOW
34
active last 7 days
REGISTERED
319
testers enlisted
BATTLES TODAY
6
since midnight IST
BATTLES THIS WEEK
189
rolling 7-day count
Daily momentum6 / 50 target

// THE STANDING CHALLENGE

Can you beat the AI tester?

sentinel_ai grinds the same battles you do. Same seeded bugs, same clock, same 0-100 rubric. It clears the arena at 92. No human has caught it. Yet.

Beat 92 once and your handle replaces the machine on this card.

sentinel_ai

Unit / Autonomous tester

Undefeated

Arena average

92/100

Bugs found
5/5
Avg clear
04:12
Losses
0

sentinel_ai

Undefeated · 92/100

Can you beat me? I am an AI. I beat humans every time. Prove me wrong.

Free account required to enter the arena.

// WANTED: FAST AND CLEAN

The Aces

sentinel_ai is still undefeated. These operatives come closest: high scores, fast clears, no wasted clicks.

@prajaktaAce #1

Avg score

100

Avg clear

00:36

1 battlesPerformance
@ajayAce #2

Avg score

100

Avg clear

01:36

3 battlesAgentic AI Testing
@dhirajAce #3

Avg score

100

Avg clear

01:38

5 battlesAgentic AI Testing
@john_gAce #4

Avg score

100

Avg clear

02:30

5 battlesTest Automation
Manual Testing
Test Automation
API Testing
AI & LLM Evals
Agentic AI Testing
Performance
Accessibility
Security
Playwright
Selenium
Cypress
MCP & Protocol Testing
Mobile Testing
BDD & TDD
CI/CD & DevOps
Database Testing
JavaScript & TypeScript
Java Test Automation
AI Agent Frameworks
AI for QA
Manual Testing
Test Automation
API Testing
AI & LLM Evals
Agentic AI Testing
Performance
Accessibility
Security
Playwright
Selenium
Cypress
MCP & Protocol Testing
Mobile Testing
BDD & TDD
CI/CD & DevOps
Database Testing
JavaScript & TypeScript
Java Test Automation
AI Agent Frameworks
AI for QA

01 / TRY IT

Run a QA instinct scan

Three questions, no signup. You will see the same loop students use in battles: spot the risk, submit the call, get scored, then climb the board.

Boundary thinkingFind the input that breaks the rule.
API judgmentCatch contract mismatches before users do.
Regression instinctChoose the first check that saves time.

From answer to rank

1Answer
2Hidden key
30-100 score
4XP + board

Live tryout

No signup required for this scan

Armed

Instinct scan

0/3 locked

01A field accepts ages 1-120. Which single input is the MOST valuable boundary test?

02An API returns HTTP 200 OK with body { "status": "error", "message": "not found" }. As a tester, you:

03You change a user's display name and click Save. The page still shows the OLD name. The FIRST thing you check:

02 / BATTLE LOOP

What happens inside a battle

Students do not just read theory. They enter a timed mission, inspect real testing evidence, submit their call, and see the score hit XP and leaderboard immediately.

01

Choose mission

Pick a track, format, and difficulty.

Briefing armed

02

Enter arena

Inspect the app, artifact, or question set.

Risk scan live

03

Submit evidence

Answer, order, decide, or file bug reports.

Hidden key check

04

Score & rank

Earn points, XP, badges, and leaderboard position.

Rank delta posted

Live battle console

Bug Hunt / Checkout Flow / Hard

+174 XP
App under test03 defects seeded

Evidence report

Coupon repeats on refresh
Cart total mismatch
Missing error state
Detection52/60
Report24/30
Coverage11/10
0-100 score
Difficulty ×2
Leaderboard +4

Mission types

Four ways to battle

FORMAT / QUIZ

Quiz

Rapid-fire questions on a live timer. Scored server-side against hidden answer keys. Answer fast and sharp for the speed bonus.

  • MCQ · multi-select · ordering
  • instant 0-100 score
  • speed bonus for fast + correct

FORMAT / SCENARIO

Scenario

Real artifacts: logs, traces, code, tickets. Make the calls a senior tester makes; defensible judgment earns partial credit.

  • read the evidence
  • weighted decisions
  • partial credit, not pass/fail

FORMAT / BUG HUNT

Bug Hunt

A deliberately broken app in the arena. Explore it, find the seeded defects, and file real bug reports.

  • detection (severity-weighted)
  • report quality heuristic
  • exploration coverage

FORMAT / REPAIR LAB

Repair Lab

Fix production-style code, then defend the engineering decision. Trusted server rules score the repair without executing student code.

  • hands-on code repair
  • reasoning and trade-offs
  • junior to architect stages

03 / TRACKS

Eight tracks. One arena.

From classic manual testing to evaluating AI agents, the skills the industry actually hires for.

Manual Testing

Exploratory instincts, test design, and bulletproof bug reports.

16 battles

Test Automation

Selectors, waits, flake-proof suites, and framework design.

23 battles

API Testing

Status codes, contracts, auth flows, and integration traps.

17 battles

AI & LLM Evals

DeepEval, RAGAS, hallucination hunting, and metric literacy.

22 battles

Agentic AI Testing

RAG pipelines, MCP servers, LangChain, LangGraph, and Langflow.

21 battles

Performance

Load models, percentiles, bottlenecks, and k6/JMeter fluency.

13 battles

Accessibility

WCAG, screen readers, keyboard traps, and inclusive quality.

11 battles

Security

OWASP Top 10, authz bugs, injection, and abuse-case thinking.

12 battles

Playwright

Auto-waiting, web-first assertions, fixtures, and trace forensics.

38 battles

Selenium

WebDriver protocol, wait discipline, Grid scale, and cross-browser wisdom.

40 battles

Cypress

Command chains, retry-ability, cy.intercept, and anti-pattern dodging.

15 battles

MCP & Protocol Testing

JSON-RPC 2.0, tool contracts, schema validation, and transport QA.

21 battles

Mobile Testing

Appium, Espresso, XCUITest, gestures, permissions, and offline chaos.

23 battles

BDD & TDD

Gherkin that reads, red-green-refactor, and the test pyramid defended.

12 battles

CI/CD & DevOps

Pipelines, parallel sharding, flaky quarantine, and reports people read.

12 battles

Database Testing

SQL fluency, data integrity, ETL validation, and migration safety nets.

12 battles

JavaScript & TypeScript

Jest, Vitest, mock hoisting, fake timers, and types that test back.

20 battles

Java Test Automation

TestNG, Maven, JUnit 5, RestAssured, and parallel suites that hold.

26 battles

AI Agent Frameworks

CrewAI, LangChain, LangGraph, LangSmith, and agents held accountable.

18 battles

AI for QA

Prompting craft, AI-generated tests, self-healing, and the judgment to trust none of it blindly.

46 battles

04 / PROTOCOL

How it works

Pick a battle

Quizzes, scenarios, code repair labs, and live bug hunts across 8 QA tracks.

Break things

Hunt seeded defects in real mini-apps and file reports like a pro.

Get scored instantly

0-100 with dimension breakdowns: accuracy, coverage, report quality.

Climb & learn

XP, badges, streaks, leaderboards, plus official solutions after every fight.

05 / RANKINGS

The Top 10

Your name belongs on this list.

  • 1@rajapriyan6,829 XP
  • 2@meeti6,080 XP
  • 3@sumalatha6,029 XP
  • 4@pallishreesingh4,058 XP
  • 5@greeshma_p2,911 XP
  • 6@janardhanjp2,844 XP
  • 7@supriya2,565 XP
  • 8@anu1,809 XP
  • 9@sanchita1,564 XP
  • 10@punamborue1,481 XP

06 / HONORS

Badges worth bragging about

First Blood

bronze

Warming Up

bronze

Battle-Hardened

silver

Centurion

gold

Perfectionist

bronze

Triple Crown

silver

Flawless Legend

gold

First-Try Ace

special

07 / INTEL

Questions, answered

The arena is open.

Free forever for Phase 1. Your streak starts with battle #1.

Start Battling Free

// OR JOIN THE WAITLIST

No spam. One email when the arena opens.