Game rules · Line & power
Tenpin
Ten frames of exact, replayable physics. The tiny rack variations are sealed in the seed — identical for both players, so reading the rack is skill, not luck.
The run
How it plays
- Aim and power come from your drag; the whole roll resolves deterministically.
- Deadwood clears between rolls; standing pins keep their exact positions.
- The tenth frame pays out up to three rolls, classic rules.
Line & power · up to 5 min
Scoring formula · versioned
Every point, accounted for
Integer arithmetic only — the same result on every device, every time. Changing any number creates a new scoring version; old results never change.
| Component | Condition | Points |
|---|---|---|
| Open frame | sum of two rolls | pinfall |
| Spare | ten in two — next roll carries | 10 + bonus |
| Strike | ten in one — next two carry | 10 + bonus |
| Perfect game | twelve strikes | 300 |
| Gutter | no pins | 0 |
Fairness
Chance never picks the winner
The challenge is sealed and identical for both players — variety without advantage. Every official score is replayed and verified on the server.
Deterministic challengesServer-replayed scoresNo random tie-breaks