Root Cause Run

SC Quality Guild arcade

Score0

Stage1

Sigma1σ

Ships3

Root Cause Run

Defects swoop in, form up, then dive at the line. Shoot them before they reach you. Watch the fishbone boss: its beam captures your ship. Shoot that boss to win the ship back and fire double.

σYou. Slide and fire upward. ▭Red tag: 50, or 100 diving ⌃Out-of-control point: 60, or 120 ↻Rework loop: 80, or 160 ∿Skewed curve: 80, or 160 ⋲Fishbone boss: two hits, 150 to 1,000 ✦Catch what falls: PDCA shield, ✓ rapid fire, Cpk bonus

Keyboard: arrow keys or A and D to move, Space to fire, P to pause. On a phone, use the buttons, or drag on the screen to move and fire. Every third stage is a challenge stage: the defects fly a pattern and don't shoot back.

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The quality behind the game

Every defect in the formation is something a quality professional chases for real: the red nonconforming tag, the out-of-control point above the upper control limit, the rework loop and the skewed distribution of a process wandering off center.

The boss is a fishbone, the cause-and-effect diagram, because a defect keeps coming back until its root cause is found. Its beam takes your ship, and you only get it back by going after the boss itself.

The power-ups are the tools that help: the PDCA cycle shields you, a check mark speeds up your fire, and a capable process (Cpk of 1.33 or better) pays a bonus. Every two stages your sigma level rises, from 1σ up to 6σ, or 3.4 defects per million opportunities.

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