Practice coding challenges, join lobbies, and improve your skills in a beautiful, modern playground.
Join thousands of developers improving their coding skills
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Join our community of developers and start solving coding challenges, compete in lobbies, and track your progress.
Explore trending challenge categories
Master programming concepts through hands-on challenges across various domains and languages
Ready to level up your coding skills?
Join live competitions or create your own lobby to compete with developers worldwide.
Write and test your solution
Run code in multiple languages with instant feedback using the Piston API.
Join or create lobbies to solve challenges together and compete with friends.
Climb the leaderboard, earn badges, and showcase your achievements.
Built with SvelteKit, Supabase, and shadcn/ui for a fast, secure experience.
Jump into a challenge or create a lobby to compete with others. Your journey to mastery starts now.
Get StartedJoin our community of developers and start solving coding challenges, compete in lobbies, and track your progress.
Explore trending challenge categories
Master programming concepts through hands-on challenges across various domains and languages
Ready to level up your coding skills?
Run code in multiple languages with instant feedback using the Piston API.
Join or create lobbies to solve challenges together and compete with friends.
Climb the leaderboard, earn badges, and showcase your achievements.
Built with SvelteKit, Supabase, and shadcn/ui for a fast, secure experience.
Jump into a challenge or create a lobby to compete with others. Your journey to mastery starts now.
Get Started