Level up as a backend developer

Java, Spring Boot, Python and more — through quizzes, code reviews, business scenarios and boss battles. Earn XP, unlock badges, climb the leaderboard.

Start your quest Explore paths

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Interactive challenges

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Languages & frameworks

Not another course. A role-playing game.

Every concept you learn makes you truly progress.

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XP & level system

Complete challenges, earn XP and climb from level 1 to 100.

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4 challenge types

Quizzes, Code Reviews, narrative Scenarios and end-of-chapter Boss Battles.

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Badges & streaks

Unlock achievements and keep your daily streak alive.

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Leaderboard

Global and per-language rankings: climb to the top.

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Always fresh content

AI-generated challenges curated by our experts.

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Structured paths

From beginner to advanced, chapter by chapter.

Choose your plan

Start free, unlock everything when you're ready.

Free

€0/month

To begin the adventure

✓First 2 chapters per path
✓XP, levels and badges
✓Global leaderboard

Start free

Premium

€12/month

Full access to everything

✓All paths and chapters
✓All Boss Battles
✓Advanced stats
✓€99/year (2 months free)

Go Premium

Team / B2B

€199/month

For companies and dev teams

✓Multi-user
✓Company admin dashboard
✓Progress reports
✓Dedicated onboarding