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
- Battles
- 418
- Tracks
- 20
- Formats
- 4
- Badges
- 25
// 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
// 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
Arena average
92/100
- Bugs found
- 5/5
- Avg clear
- 04:12
- Losses
- 0
VS
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.
// LEVEL UP FOR REAL
Battles train instinct. These build careers.
Live cohort courses from The Testing Academy, the same crew that forges these battles. Code PROMODE takes up to 10% off.
// LIVE COURSE / THE TESTING ACADEMY
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Playwright jobs are growing 8x faster than Selenium. 90 days / 75+ live hrs / Tue-Thu-Sat 7 AM IST.
// LIVE COURSE / THE TESTING ACADEMY
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Master GenAI, AI Agents, MCP, RAG, CrewAI. Build 23+ real AI projects.
AI testing roles are up 180% and pay 12-22 LPA. 12+ weeks / 65+ live hrs / Sat-Sun 8:30 AM IST.
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.
Choose mission
Pick a track, format, and difficulty.
Briefing armed
Enter arena
Inspect the app, artifact, or question set.
Risk scan live
Submit evidence
Answer, order, decide, or file bug reports.
Hidden key check
Score & rank
Earn points, XP, badges, and leaderboard position.
Rank delta posted
Live battle console
Bug Hunt / Checkout Flow / Hard
Evidence report
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
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