Coding games that adapt to you

12 games across languages and topics. Questions get harder as you get better, and every correct answer earns XP toward your level, streak and rank.

• PythonPython ZipperZip your way through the Syntax Serpent.
• JavaScriptJS JugglerKeep the Event Loop spinning.
• JavaJava JumperLeap from class to class.
• CSS selectorsCSS DinerPlate up the perfect selector.
• HTMLHTML Tag TowerStack semantic tags to the sky.
• CSS layoutCSS DefenceContain the chaos with Flex & Grid.
• AlgorithmsAlgo MazeNavigate the Logic Labyrinth.
• Data structuresStructure SurferSurf through stacks, queues and trees.
• SQLSQL SleuthSolve mysteries one query at a time.
• C++Pointer PilotNavigate pointers and memory without a segfault.
• Machine learningML AlchemistTurn raw data into predictions worth trusting.
• DebuggingBug BusterHunt down the bug hiding in plain sight.