KageX
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.

Three Difficulty Modes

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