A 7×7 cluster-pays, cascading slot from Spin Slaughter. Win, and the tide rises.
Also live across Stake's platforms — stake.com · stake.us · stake.eu · stake.mx · staked.com
(global slug: spinslaughter-poseidons-tide)
Poseidon's Tide is an underwater Greek-mythology slot built on Stake Engine. It's a 7×7 cluster-pays game with cascading / tumbling reels, and its signature mechanic is the Tide: every win floods the board a little higher — a brass depth gauge fills, and rows of multiplier badges submerge one by one. A chibi Poseidon stands beside the reels and causes the surge: raise the trident, and the water rises.
It's a social-casino title — play is in Stake Cash / Gold Coins (SC / GC), no real-money wagering.
| Grid | 7×7, cluster pays (5+ connected symbols) |
| Core mechanic | Cascading wins + the rising Tide (depth gauge → submerging multiplier badges) |
| RTP | 96.5% (server-authoritative) |
| Max win | 5,000× |
| Bet modes | Base, Ante, and two feature buys |
| Volatility | Medium-high |
| Mascot | Poseidon (idle + reactive trident animations) |
| Currency | Social — SC / GC |
| Studio | Spin Slaughter |
Frontend — PixiJS v8 + pixi-svelte (Svelte 5 runes) + SvelteKit, an XState round machine, and Howler audio, on the Stake Engine web-sdk.
Math — Python engine on the Stake Engine math-sdk: server-authoritative books, forced-seed test suites, and RTP-validated lookup tables.
frontend/ Stake Engine web-sdk app (apps/acqua-alta) + shared SDK packages — game source
math/ Stake Engine math-sdk game (games/acqua_alta) — math model source
assets/ cover art
Note: this repo holds source only. Built bundles,
node_modules, Python virtualenvs, and the generated math data (multi-GB book/lookup files) are intentionally excluded — the live game runs on Stake's RGS.