Lunar Disc
IGT · Six-Ring Persistent Disc Meter
Lunar Disc overview
Lunar Disc uses a six-ring meter above the reels. Collected Lunar Disc symbols fill the rings, and a completed meter spins for a feature or jackpot outcome.
Primary floor read: How many of the six disc rings are already filled.
How the disc meter works
Lunar Disc symbols add rings to the visible disc meter. IGT product material states that when all six rings are filled, the disc spins to reveal the award.
Why the state is easy to read
The machine presents a bounded six-step collector, so the visible ring count is a straightforward measure of accumulated progress.
What to inspect
Count the filled rings and verify bet level/configuration before applying any play assumption.
Common mistake
Do not assume that being one ring away guarantees the very next spin completes the meter. The final collection event still has to occur.
Public guide vs. member strategy
This public page explains the observable machine state and the feature mechanics. APWebsite does not publish a universal entry threshold here because the correct play/pass point can change with wager, denomination, configuration, feature value, competition and variance.
Research confidence: High — IGT product material explicitly documents the six-ring Lunar Disc meter.
For the fundamentals behind these reads, see Persistent State, Expected Value and Meters & Collectors.
Verification and corrections
This public overview is based on available manufacturer information, cabinet help-screen observations and machine-specific research. Rules can vary by cabinet, jurisdiction, denomination and software configuration. Verify the exact machine before wagering.
Found a configuration difference or outdated detail? Email APWebsite with the exact title, casino or jurisdiction, cabinet and the rule that differed.
Unlock the full Lunar Disc strategy
Detailed entry criteria, calculator logic where supported, configuration notes and deeper play/pass strategy stay member-only.