A 5×4 mystery-slab line slot from Spin Slaughter. Slabs merge. The board roars.
Also live across Stake's platforms — stake.com · stake.us · stake.eu · stake.mx · staked.com
(global slug: spinslaughter-pride-blocks)
Pride Blocks is a savanna-themed 5×4, 20-line slot built around one bold twist: Mystery Slabs. Slabs drop as 1×1, 2×2 and 3×3 blocks; after the reels stop, every adjacent slab merges into one mass and the whole mass flips together to reveal a single symbol. Mass = quality — a bigger merge weights toward premium symbols and earns a size-indexed reveal multiplier, so payouts smear smoothly into the tail. A full-board merge is the signature moment. A cosmetic Pride Meter builds with every merge, and an idle lion presides over the board.
It's a social-casino title — play is in Stake Cash / Gold Coins (SC / GC), no real-money wagering.
| Grid | 5×4, 20 fixed lines, left-to-right |
| Core mechanic | Mystery Slabs merge → group flip → mass-indexed reveal multiplier |
| Symbols | Lion, Tiger, Bear, Stag, Fox premiums; stone royals; Wild (flame); FS (fangs) |
| RTP | 96.5% (both modes) · base hit-rate 22–28% |
| Free spins | 3/4/5 scatters → 8/12/16 spins · retrigger +4 · escalating slab rate |
| Bonus buy | 100× |
| Max win | 10,000× (wincap) |
| Currency | Social — SC / GC |
| Studio | Spin Slaughter |
Frontend — Svelte 5 + PixiJS v8 + Vite; DOM HUD over the Pixi canvas, light Spine rigs on the animal premiums, tier-scaled burn-away win presentation.
Math — Python engine on the Stake Engine math-sdk: 96.5% RTP both modes, ~1,200+ distinct payouts with no gap between 1,000× and the cap, forced-seed certification suite.
frontend/ Svelte 5 + PixiJS + Vite game source (game/)
math/ Stake Engine math-sdk model source (sdk_game/)
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.