Live competitive coding arena

Code Royale

Real-time 1v1 coding battles. Pick a War, get matched, and fight through challenges in MCQ and live code execution.

9 competitive Wars · Elo ranking · Badge tiers · Judge0-powered code execution

No sign-up required. Guest players get instant bot matches.

How it works

Step 01

Choose your domain — DSA Wars, Python Wars, Cybersec Wars, and more. Each War has its own Elo and leaderboard.

Step 02

Find a live opponent or face our bot. Elo-based matchmaking ensures fair fights. Never wait alone.

Step 03

Answer MCQs, write code executed live by Judge0. Win rounds, climb the leaderboard, earn badges.

dionisiodev

Elo 1520

DSA Wars · Round 3/6

1:42

What is the time complexity of binary search?

1.O(n)

2.O(log n)✓

3.O(n²)

4.O(1)

60 / 100

Code Royale Bot

Elo 1480

Real battles look even better