1v1 · real time · same problem
Out-code your friends. Live.
Challenge a friend, get the same problem, and race to the first accepted solution. The server judges every submission, so the fastest correct coder wins.
Add friends
Find players by username and send a request.
Challenge
Pick a difficulty. You both get a problem neither has seen.
Race the clock
Earliest accepted submission wins, judged on the server.
Win coins
Climb levels and the leaderboard with every victory.