Games
Short visual puzzles that show what your code actually does. Predict the output, watch it run step by step, and keep the rule that explains it. Every level is checked against the real runtime.
- Node.js · 7 games · 85 levels
Node.js mastery path
Seven games, one idea each: the event loop, streams, the thread pool, modules, HTTP, the process lifecycle and buffers.
- PHP · 6 games · 45 levels
PHP mastery path
Six games on how PHP really behaves: copies and references, scope and closures, classes, errors, type juggling and generators.
- TypeORM · 4 games · 31 levels
TypeORM mastery path
Four games that show the SQL behind every call: counting queries, loading relations, transactions and the QueryBuilder.