BYTEBRAWLReal-time competitive coding duels — Ranked Brawl (ELO) & Friendly Brawl

COMPETITIVE CODING ARENA
Stop Grinding Alone. Start Brawling Together

Face off against developers worldwide in real-time 1v1 coding battles. Every keystroke counts. Every algorithm matters. Only the fastest survives.

1v1
Real-time Battles
6
Languages
∞
Challenges
> initialize("warrior_mode")
★New • 1v1 LeetCode duels

Stop Grinding Alone.
Start Brawling.

Battle real opponents on timed LeetCode-style problems. Earn ELO, climb the ladder, and turn solo practice into high-intensity duels.

Challenge a FriendFind Random Opponent
opponent1588Reviewing tests
Test Cases:2/3 passed
Language:Python
Status:Testing solution...
Live duel • 02:13 left
+24 ELO on win
< />two-sum.py
Python
def two_sum(nums: list[int], target: int) -> list[int]:
    num_map = {}
    for i, num in enumerate(nums):
        complement = target - num
        if complement in num_map:
            return [num_map[complement], i]
        num_map[num] = i
    return []

OUTPUT

Test case 1: PASSED
Input: nums = [2,7,11,15], target = 9
Output: [0,1]
Expected: [0,1]

Test case 2: PASSED
Input: nums = [3,2,4], target = 6
Output: [1,2]
Expected: [1,2]

Test case 3: PASSED
Input: nums = [3,3], target = 6
Output: [0,1]
Expected: [0,1]

All tests passed! ✓
• Brawl Modes

Choose how you want to duel.

Warm up with friends or jump straight into Ranked Brawl. Swap modes anytime—your rating only moves in Ranked Brawl.

Friendly Brawl
  • Select problem difficulty when challenging your friend
  • Both players solve the same LeetCode-style question
  • First correct submission wins and gains ELO
  • Built-in chat for quick coordination
Create friend lobby
FRIENDS
LIST
raw_apple
ELO 1588
online
code_master
ELO 1720
Brawling
algo_ninja
ELO 1450
online
stack_overflow
ELO 1890
offline
binary_beast
ELO 2140
Brawling
data_struct
ELO 1650
online
recursive_pro
ELO 1980
offline
ELO progression
Example of the chart you'll see on your dashboard
+140 this month
Dec 23Jan 1
Leaderboard preview
#1binary_beast
2140 ELO
#2heap_hacker
2075 ELO
#3queue_master
2012 ELO
#4code_wizard
1950 ELO
#5algo_ace
1895 ELO
View full leaderboard
Preview

See what a duel looks like.

Practice duel • Medium • Arrays & Hashing
Timer: 12:48 remaining
< />two-sum.java
Java
public int[] twoSum(int[] nums, int target) {
    Map<Integer, Integer> map = new HashMap<>();
    for (int i = 0; i < nums.length; i++) {
        int complement = target - nums[i];
        if (map.containsKey(complement)) {
            return new int[]{map.get(complement), i};
        }
        map.put(nums[i], i);
    }
    return new int[0];
}
All tests passing
O(n) • 32ms • 18MB
Complexity score+32 pts
Better than 78% of recent submissions
Duel outcome: You won
ELO change+24
Time to solve06:42
Mistakes caught by tests3
Start a practice duel
Community

Trusted by serious grinders.

Whether you're prepping for interviews or chasing the rush of competition, duel with people who take it seriously.

10,000+
duels completed
From quick warmups to late-night grind sessions, people are turning solo practice into real competition.
15 min
average match length
Short, focused duels that fit between meetings, classes, or during your daily practice block.
4.9 / 5
avg duel rating
Players love the mix of real competition, clean UI, and structured feedback after every match.
Everything included

All the features already live in ByteBrawl.

Brawl rooms (private 1v1)
Create or join a room and race to a correct submission. Live status + in-match chat included.
Explore
Ranked Brawl + ELO
Queue into ranked and get matched by rating. Wins/losses update ELO automatically.
Explore
Party Brawl (multiplayer)
Kahoot-style room codes, up to 10 players, ranked by correctness + submission time.
Explore
LeetCode-style editor + tests
Syntax highlighting, templates, sample runs, hidden judge submits via Judge0 integration.
Explore
Public leaderboard
Top players by ELO, with win/loss breakdowns and top-3 highlights.
Explore
Realtime presence + chat
Live opponent signals (typing/testing/submitted) and room chat during matches.
Explore
Themes

Make the arena yours.

ByteBrawl ships with multiple theme presets (light/dark + Cozy, Green, Purple, Ember, Obsidian variants). Pick one and the whole UI updates instantly.

Anti-cheat & copy-paste detection enabled
Built for high-intensity competitive coding.
Real-time duels, ELO rankings, and time pressure—everything you love about ranked games, applied to algorithms.
Enter the Arena Watch the ladder
Tip: you can change themes anytime in Settings or right here on the landing page.