Boost Your Coding Skills with CodinGame’s Interactive Challenges

Recently I discovered an online coding learning platform called CodinGame, which makes programming fun by presenting each challenge as a game. After writing a piece of code and executing it, the game visualizes the code's effect.

For example, the introductory challenge looks like this:

Each round presents two enemies, and you must eliminate the closest one. In code, you simply find the nearest enemy and print its name:

// game loop
while (true) {
    const enemy1 = readline(); // name of enemy 1
    const dist1 = parseInt(readline()); // distance to enemy 1
    const enemy2 = readline(); // name of enemy 2
    const dist2 = parseInt(readline()); // distance to enemy 2

    // Write an action using console.log()
    // To debug: console.error('Debug messages...');

    // You have to output a correct ship name to shoot ("Buzz", enemy1, enemy2, ...)
    const enemy = dist1 < dist2 ? enemy1 : enemy2;
    console.log(enemy);
}

The whole process is demonstrated in the accompanying video.

CodinGame offers puzzles of varying difficulty to help improve coding abilities. This game‑based approach makes learning more engaging, and the platform supports not only JavaScript but also Java, Go, and other languages.

CodinGame’s business model includes charging enterprises for assessment and online interview services, similar to LeetCode, and it also provides a question bank for corporate interview preparation.