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Technical specification
Measured from the current build of the platform: the Unity client, the game server, the slot engine, the database, and the admin console. Every package — from the $999 single game to the 30-game bundle — includes all of it.
01
One Unity project runs every title. The client only animates results: reels, wins, balance, and features are decided by the server.
| Engine | Unity 6000.3.20f1 · Universal Render Pipeline 17.3 (2D renderer) · uGUI · Input System |
|---|---|
| Key packages | Addressables 3.1 · Localization 1.5 · Newtonsoft JSON 3.2 · Timeline · Visual Effect Graph |
| Build targets | Android (IL2CPP, ARM64, min API 25) with a command-line signed-APK build and an offline "all games inside" demo APK; WebGL; macOS |
| Content packaging | Each title is a remote Addressables group downloaded on demand; the lobby and shared UI ship in the app. The game server can host the bundles itself at /addressables. |
| Code layout | Boot, Core (wire models), Game (slot machine, reels, bet, lobby, hold & win board), Net (REST client, asset loading), UI (HUD, rules and paytable pages, localization), Timeline (server-event presentation), Editor (build and art tooling) |
| Networking | REST over UnityWebRequest with JWT bearer auth. Spin commands carry protocol version 2 and a fresh idempotency key; one safe retry reuses the same request bytes. |
| Embedding | A CasinoSlotPanel entry point lets a host Unity app list the games and launch them with its own session token; an exporter packs the runtime as a DLL SDK. |
| Localization | 12 locales, a shared UI string table (165 keys), and per-title rules pages; language picker plus device-locale detection |
| Tests | 65 EditMode and 8 PlayMode test files (≈686 test cases by source count) |
02
A single ASP.NET Core 8 service hosts the game API, the SignalR hub, the admin console, and optionally the client's content bundles.
| Stack | .NET 8 · ASP.NET Core · EF Core (Pomelo MySQL 8.0) · JWT Bearer · BCrypt.Net · Swashbuckle |
|---|---|
| Startup checks | Validates every game definition, applies database migrations, and checks pinned feature sessions; the server refuses to start on invalid data. |
| Background work | Scheduled math deployments publish at a set UTC time. |
| Health | GET /health |
| Endpoint | Access | Purpose |
|---|---|---|
POST /api/auth/register | Public | Create a player account |
POST /api/auth/login | Public | Sign in; returns a JWT with balance and wallet revision |
GET /api/games | Public | Lobby list, optionally with maintenance status |
GET /api/games/{id}/config | Player | Reels, paytable, bet ladder, features, math version and hashes |
POST /api/games/{id}/spin | Player | Paid spin, free spin, or feature buy |
POST /api/games/{id}/command | Player | Feature commands such as the free-spin choice |
POST /api/games/{id}/gamble | Player | Double-or-nothing on a pending win (off in all 13 titles) |
GET /api/games/{id}/session | Player | Reconnect to an unfinished feature |
GET /api/wallet/balance | Player | Balance and wallet revision |
/api/admin/* | Admin (per-area permission) | 42 endpoints behind the admin console |
/hubs/live | Player | SignalR hub pushing balance and jackpot updates |
POST /api/games/{gameKey}/spin Authorization: Bearer <jwt> { "protocolVersion": 2, "command": "bet", "gameKey": "{gameKey}", "bet": 1.0, "lines": 20, "stakeMinor": 200000, "currency": "XGC", "idempotencyKey": "7f3c…", "sessionRevision": 41 }
{
"roundId": "…",
"state": "base",
"reels": [[3,7,1],[…]],
"win": { … },
"freeSpins": { … },
"events": [ … ],
"availableCommands": ["bet"],
"balanceMinor": 998000,
"walletRevision": 1043,
"mathVersion": "…",
"mathHash": "…"
}
03
One data-driven engine runs every title from its JSON definition. New games are mostly new definitions and art, not new server code.
Paylines, ways (fixed or variable rows), pay-anywhere, and row-anywhere evaluators, plus cascades (tumbles) and a max-win cap.
Free spins with retriggers and random awards, player-choice free-spin packages, hold & win, gem respins, sticky, multiplier and raining wilds, repeat-win free spins, adjacent-reel scatter pays, feature buy, ante and super-spin bet modes, gamble.
Shared progressive pools fed by every paid stake, paired progressive jackpots, and fixed-tier jackpots paid as multiples of total bet.
Cryptographic RNG (.NET RandomNumberGenerator) in production; a seeded RNG for simulations and tests. Every round's full result is stored, so any round can be replayed in the admin console.
A server-side payout governor keeps each game's measured RTP near the target the operator sets in the admin console, within a shared payout bank. Configurable correction rules (such as dead-spin and free-spin guarantees) can be tuned or switched off per title.
Each title is three JSON parts — base game, free game, and logic — with SHA-256 math and definition hashes. Players in a bonus stay pinned to the version they started on.
Validate, publish, or schedule a new definition from the admin console with hot reload, automatic archiving, one-click restore, and a change log of every attempt.
Multi-threaded Monte-Carlo runs on the production engine (default 100,000 spins), including what-if runs on a candidate definition before it goes live.
Command-line definition checks and 19 offline golden suites covering the engine, money contract, protocol, features, maintenance rules, and RTP windows.
04
MySQL or MariaDB through Entity Framework Core. 17 migrations run automatically at startup. Every financial command is one database transaction with row locks.
| Table | Holds |
|---|---|
Users | Players and admins, BCrypt password hash, balance, wallet revision, block and admin permissions |
Transactions | Every wallet movement with before/after balance and source |
GameLogs | Every round with its full result, command type, and math version |
SpinCommands | Idempotency receipts: request hash and stored response |
FeatureSessions | Reconnectable, version-pinned bonus state per player and game |
GameStats | Per-game ledger, RTP target, and enabled flag |
GameBanks · Jackpots | Shared payout bank and progressive jackpot pools |
GameMaintenances | Global or per-game maintenance windows |
MathChangeLogs · ScheduledMathDeployments | Math publish history and scheduled releases |
RtpSimulationRuns | Saved simulator runs with settings and reports |
Database constraints and a trigger keep balances in range and wallet revisions monotonic.
05
A web console served by the game server at /admin. The console UI is in Korean. Try it with the demo account on the home page.
| Area | What the operator can do |
|---|---|
| Dashboard | KPIs and measured RTP over rolling 1, 3, 6, and 12-hour windows |
| Realtime | Live play activity and request success, failure, and latency |
| Games | Enable or disable games, set RTP targets, schedule global or per-game maintenance |
| Math | Edit, validate, publish, schedule, and restore game definitions |
| Simulator | Run and compare RTP simulations |
| Players | Search players, adjust balances, block accounts, grant maintenance bypass |
| Reports | Per-game RTP split into base game, free spins, and feature buys |
| Rounds | Spin history with filters, round detail and replay, raw game logs |
| Audit | Math changes, balance adjustments, and admin actions |
| Security | Create admin accounts and grant none, view, or edit per area |
Permissions are carried in the admin's token and enforced on every admin API call, not only hidden in the UI.
06
07
The 13 live titles as defined in their math files. Gamble, ante, and super-spin modes exist in the engine but are switched off in all of them.
| Title | Grid | Pays | Main features | Feature buy | Max win |
|---|---|---|---|---|---|
| Savanna Storm | 5×4 | 1,024 ways | Free spins 8/15/20 with retrigger, ×1–×3 wilds, symbol upgrades from a collector | 100× | — |
| Sunstone Citadel | 5×4 | 50 lines | Free spins 10/15/20 | — | — |
| Velvet Fortune | 5×3 | 50 lines | Hold & win with MINI–GRAND jackpots; 6 free spins with ×5 wins | — | — |
| Jadeveil Temple | 5×3 | Row-anywhere | Choice of 5 free-spin packages (10×2 to 3×8), shared progressive GRAND | — | — |
| Frostpeak Dominion | 5×3 | 5 lines | Repeat-win free spins, adjacent-reel scatter pays, paired MAJOR/MINOR jackpots | — | — |
| Mischief & Gold | 5×3 | 25 lines | Hold & win with 12 respins, multiplier coins, five jackpot tiers; 12 free spins | — | — |
| Verdant Fang | 5×3 | 25 lines | Wilds ×2–×20, 10 free spins with retrigger, gem respin, symbol jackpots | — | 10,000× |
| Amberclaw Dynasty | 5×3 | 243 ways | Hold & win with five jackpot tiers; 8 free spins | 100× | — |
| Sunscarab Vault | 5×3 | 50 lines | Hold & win with MINI–GRAND jackpots; 9 free spins | 100× | — |
| Copperfang Canyon | 5×3 | 20 lines | Free spins 5/10/15 | — | — |
| Crimsonwood Tales | 5×3 | 20 lines | Free spins 8/10/12, bonus-scatter instant prizes 5/15/50× | — | — |
| The Animal Party | 5×3 | 20 lines | Sticky wilds in free spins, ×2/×3 wilds, random free-spin count; declared RTP 96.51% | — | 6,750× |
| Stormforge Legacy | 5×3 | 20 lines | ×1/×2 wilds, 8 free spins | — | 6,750× |
Feature buy and max win are multiples of total bet. The default RTP target is set per game in the admin console.
08
| Server OS | Linux x64 (publish script and systemd unit included) |
|---|---|
| Runtime | .NET 8 (ASP.NET Core) |
| Database | MySQL or MariaDB; the account must be able to create triggers and check constraints |
| Network | Plain HTTP on a configurable port (7760 by default); terminate TLS at your reverse proxy or load balancer |
| Game content | Game definitions in a games folder; client bundles served from the game server or any static host |
| Client build | Unity 6000.3.20f1; Android builds need the Android module and your signing keystore |