Faultline Check — Play Free Online

HOW TO PLAY

1. Press Start Shift to begin a 45-second inspection run.
2. Read the active rules: allowed color, maximum pins, and the hidden defect that must be rejected.
3. Tap the module to inspect its back scan, then choose Approve or Reject.
4. Rules rotate every 4 modules. Wrong calls cost 5 seconds, so speed only matters if your checks stay accurate.

TIPS & STRATEGY

• Check all three rules before every call: the allowed color, the maximum pin count, and the banned defect. A module is safe only if it passes every one of them.
• Color and pins are shown on the module's front, but the defect is hidden — tap Inspect to flip the back scan before deciding when the defect rule is what could trip you up.
• Watch the shift counter. Rules rotate every 4 modules, so re-read the rule card the moment it changes instead of relying on the previous batch's pattern.
• Prioritize accuracy over rushing. A wrong call costs 5 seconds and breaks your combo, so a careful inspection almost always beats a fast guess.

ABOUT

Faultline Check is a short inspection game about reading rules and verifying evidence under pressure. Instead of simply sorting by color, you must compare every module against changing constraints and sometimes flip it to reveal a hidden defect. Your best cleared-module count is saved on your device, and the sharpest inspectors reach the global TOP 20 leaderboard.

FAQ

How do you play Faultline Check?

Press Start Shift and judge each module against the rule card during a 45-second run. Inspect the back scan if needed, then Approve safe cores (A/left reject, D/right approve, W/up inspect) and reject the faulty ones.

What makes Faultline Check tricky?

You're not just sorting by one trait — a module must satisfy the allowed color, stay within the max pins, and avoid the banned defect all at once. The defect is hidden until you flip the module, so you have to gather evidence under time pressure.

How does a run end and how is score counted?

Each correct approve/reject adds one cleared module and grows your combo. Wrong calls cost 5 seconds, and the shift ends when the 45-second timer runs out.

When do the inspection rules change?

The rules rotate every 4 modules, and the shift counter shows how many modules remain until the next change. Always re-read the allowed color, max pins, and banned defect after a rotation.

Is Faultline Check free to play?

Yes. Faultline Check is free, runs in your browser with no install or signup, and your best cleared-module count is saved on your device. The sharpest inspectors can reach the global TOP 20 leaderboard.