🔷 Parcel Prism
Read a two-part logic rule and sort twelve colorful parcels between Match and Other before three errors stop the belt.
Play: The interactive game loads on this page in a modern JavaScript-enabled browser. The complete guide remains readable before it loads.
Controls
Desktop
Press A/Left for Other and D/Right for Match; P pauses and R restarts
Mobile
Tap the left Other bay or right Match bay after checking the parcel against both rule conditions
What is distinct here
Parcel Prism introduces practical Boolean reasoning through visible parcel attributes. AND, OR and exactly-one rules change how the same colors and shapes should be sorted, so the rule—not a decorative theme—drives every decision.
Rules
- Every run presents one compound rule made from two different attributes: color, shape or mark.
- Route each parcel to Match when it satisfies the full rule, or to Other when it does not. AND, OR and EXACTLY ONE use different truth conditions.
- The deterministic deck always contains twelve parcels split evenly into six matches and six nonmatches, so no run is biased toward one bay.
- Sort all twelve to win. A wrong bay uses one of three error allowances; correct streaks and faster clean runs build a higher score stored locally.
Strategy tips
- Check the two conditions separately before applying the operator; this prevents an attractive color from hiding a wrong shape or mark.
- AND requires both facts, OR accepts either fact or both, while EXACTLY ONE rejects parcels that satisfy both conditions.
- Use the fixed six-match, six-other balance only as a late tie-breaker; the visible rule always provides the reliable answer.
What we tested
Every deterministic round contains six matches and six non-matches for its displayed operator. Tests enumerate all operators, validate balance, error limits, streak scoring, pause and restart, and complete the twelve-parcel belt.
Frequently asked questions
What does EXACTLY ONE mean in Parcel Prism?
The parcel must satisfy one of the two displayed conditions, but not both. A parcel matching both belongs in Other for this operator.
Is every Parcel Prism round fair?
Yes. Each deterministic round contains exactly six parcels that match its visible rule and six that do not, across every supported operator.
Does Parcel Prism upload my choices or score?
No. Only the best score is stored locally in this browser, and the game needs no account or personal information.
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