Choose a stake, then spin five reels. Wins arrive in weighted prize bands and are staged across the center line. Six or more koi coins trigger the Fortune Cascade presentation.
Prototype return model
| Prize | Probability |
|---|
| 0.5× | 15.0000% |
| 1× | 10.0000% |
| 2× | 5.0000% |
| 5× | 3.0000% |
| 10× | 1.0000% |
| 25× | 0.5000% |
| 50× | 0.2000% |
| 100× | 0.1000% |
| 5,000× | 0.0023% |
Lab-ready summary
Target RTP: 96.5%. Hit frequency: 34.8023%. Maximum award: 5,000× stake. High volatility. One independently sampled prize band per spin using the browser cryptographic random source.
The reel display communicates the selected award band; it is not a production reel-strip implementation. Commercial release requires finalized reel strips, certified RNG integration, jurisdictional review, and independent laboratory certification.