Bug Hunter

v1.0.0

Spot the bug in 90 real code snippets across JavaScript, TypeScript, Python, Go, Rust and C#. Timed rounds, streak bonuses and a global scoreboard.

A debugging quiz game — read a short buggy code snippet and pick the correct description of the bug from four choices. Covers JavaScript, TypeScript, Python, Go, Rust and C#.

How to use

→Select a language and difficulty, then press Start (or Space) to begin. Each round has 10 questions.
→Press A / B / C / D (or 1 / 2 / 3 / 4) on your keyboard to answer quickly without reaching for the mouse.
→Wrong answers cost you a life — you start with 3. A 5-question streak earns a bonus life (max 5).

Language

Difficulty

Rounds

30 snippets available

0Score

Lives

0Streak

—/10Round

Find the bug in each code snippet. Use keyboard shortcuts A – D or 1 – 4 to answer fast.

Scoreboard

Scoreboard unavailable in static mode.