Realbugz — Free Online Bug Hunting Simulator

Realbugz is a free online bug-hunting simulator for QA testers and students: four realistic tasks — an article, a registration form, an SQL database and a REST API — with intentionally planted bugs to practice test design techniques, in English and Russian, no registration required. Every task starts with a page of requirements, and you look for defects the way you would on a real project — then describe them in a bug report.

Realbugz is completely free and requires no account: open the site and start with any of the four tasks. The project is built and maintained by one person, without sponsors or paid plans. If the simulator helps you, you can support the author on Boosty or Patreon — this is optional.

Realbugz has four tasks, each covering a different area of manual testing: Article — spelling, content and UI bugs on an article page; Form — a registration form tested against its requirements (field validation, boundary values, required fields, file upload); Database — SQL queries to a SQLite database; API — REST requests to a live API in Postman, checking responses and status codes. All tasks share one fictional setting: an archaeological expedition in search of the lost city of Eldoria.

Realbugz is for anyone learning or practicing software testing: beginners taking their first steps in QA, students of testing courses, experienced testers who want to keep their bug-hunting skills sharp, and instructors who need ready-made practical assignments. The difficulty ranges from beginner to intermediate; the easiest entry point is the Article task, which needs nothing but a browser.

For the Article and Form tasks on Realbugz you need only a browser. For the Database task you download a SQLite file (eldoria_v2.db) and open it in the free DBeaver Community Edition; for the API task you use the free Postman app together with the API documentation at api.realbugz.com/docs. Step-by-step setup instructions are on each task’s requirements page.

Realbugz includes solutions for the Database and API tasks, but not for Article and Form. The SQL queries are hidden in collapsible “Solution” blocks and the API task comes with a Postman collection of ready requests; we recommend trying on your own for 10–20 minutes before opening them. Article and Form have no answer key on purpose: as on a real project, you find the bugs yourself and describe them in a bug report with steps to reproduce, expected and actual results.

Realbugz was created and is maintained by Pavel Aladyshkin as a personal, self-funded project. Questions, feedback and ideas for new tasks are welcome at [email protected].