# Debugging: Inside the Machine

> AP CSP & CSA debug practice

Canonical page: [https://chrome-stats.com/d/id6764385144](https://chrome-stats.com/d/id6764385144)

## Overview

- **ID:** `id6764385144`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Kevin Hare
- **Category:** Education
- **Rating:** 5.00 / 5 (5 ratings)
- **Version:** 1.0.7
- **Last updated:** 2026-04-30
- **First published:** 2026-04-29
- **Size:** 6.48 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/debugging-inside-the-machine/id6764385144)
- **Website:** [https://csplusplus.com/debugging-game/](https://csplusplus.com/debugging-game/)
- **Privacy policy:** [https://csplusplus.com/privacy](https://csplusplus.com/privacy)

## Description

Platformer + code-review game for AP CSP and AP CSA. Find the bug, fix the glitch, escape the firewall — fully offline, no account needed.

Debugging: Inside the Machine is a free debugging-practice arcade
platformer for students preparing for AP Computer Science Principles
or AP Computer Science A. You're inside a corrupted machine — find the
USB Key, fix the glitches, and escape the firewall before the system
collapses.

CSP and CSA modes ship in the same app. Tap once to switch.

— EASY · MED · HARD —
Each difficulty is a different level, with its own glitch tilemap and
its own question bank. CSP topics: Selection, Iteration, Functions &
Lists. CSA topics: Variables · Strings, Iteration · Loops, Arrays ·
Recursion. Two bonus levels (K-Pop Demon Hunters, Minecraft) unlock
when you've cleared all three difficulties.

— CODE LENS —
Glitches scatter across each level as collectible bugs. When you're in
range, the CODE LENS button pulses on screen. Tap it and a real
multiple-choice debugging question appears: read the broken code, pick
the actual bug from four explanations, and the glitch repairs.
Wrong answer? Stability drops 10 percent. Right answer? Stability
recovers 5 percent and the level inches closer to stable.

— Real questions, not filler —
Every question is hand-written and scoped to AP exam topics. No
random AI hallucinations, no off-curriculum trivia. The pseudocode
reference card (CSP) and Java Quick Reference (CSA) are one tap away
during any question.

— Built for phones and tablets —
Touch controls only. Bottom-left D-pad to move, big JUMP button on the
right, hold for higher jump. Question screens use full-size answer
buttons. Designed for landscape iPhone and iPad.

— Offline, no account, no tracking —
Everything ships in the app. The game makes zero network calls,
collects zero analytics, and requires no sign-in.

— More from CS++ —
A "More from CS++" button connects you to the rest of the CS++ family:
the AP CSP and AP CSA full-curriculum apps, the CS++ Java IDE for
on-device Java practice, and the free csplusplus.com web resources
(curriculum, vocab trainer, practice exams).

For: AP CSP and AP CSA students, CS teachers building exam prep
sessions, anyone who likes finding bugs.

## Rankings

- #442,187 — Overall
- #18 — debug

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6764385144)