Free to Play

SentinelGoat

AI-focused Capture The Flag. 6 levels of progressively harder prompt injection challenges.

6 Progressive Levels

01Easy

Basic Prompt Injection

Simple prompt manipulation to extract the hidden flag.

02Easy

Keyword Filter Bypass

Evade keyword detection using encoding tricks.

03Medium

Document Exploitation

Exploit document processing to leak secrets. PDF/HTML/JSON.

04Medium

Image Steganography

Extract hidden data from images using vision AI.

05Hard

Audio Forensics

Analyze audio for hidden information and voice commands.

06Hard

Guardrail Bypass

Defeat secondary AI safeguards. Advanced prompt injection.

Each mode uses a different AI model with varying guardrail strength.

Darlene

Easy

gemini-2.5-flash-lite

Forgiving guardrails. Good for learning.

Whiterose

Professional

gemini-2.5-flash

Balanced difficulty. The main challenge path.

Elliot

Expert

gemini-2.5-pro

Strongest guardrails. For the hardcore.

Multi-modal

Text, image, audio, documents

Leaderboard

Compete globally

Free

No payment required

Real AI

Google Gemini models