FastGamesAPI — 68 provably-fair games, one wallet integration

The portfolio

Every game your players want

From dice and crash to a deep slots library and regional favourites — one catalogue, one /api/v1/bet endpoint, every result cryptographically verifiable.

68 games across 5 categories — tap any LIVE title to play a real round now.

Dice

Plinko

Limbo

Coin Flip

Mines

Hi-Lo

Keno

BitKong

Crash

Mines

Tower

Pump

Gold Rush

Minesweeper

Treasure Map

Bicho

Blackjack

Baccarat

Video Poker

Diamond Poker

War

Red or Black

Kilic

Roulette

Sic Bo

Barbut

Fruit Slots

Egypt Slots

Frost Slots

Retro Diner

Tiki Slots

Aztec Gold

Dragon Dynasty

Atlantis

Pirate Slots

Sky Corsairs

Graveyard

Wild West

Cyber Slots

Norse Slots

Samurai

Wasteland

Space Slots

Leviathan

Mecha Slots

Olympus

Candy Slots

Gem Mine

Reef Slots

Sushi Slots

Genie Slots

Shamrock

OneReels

Heist

Vault

Wizard Slots

Duck Slots

…and 20+ more slot themes — Aztec, Olympus, Norse, Samurai, Frost, Tiki, Gem, Heist & more, all sharing one RTP-validated reel engine.

Penalty

Darts

RPS

Duckhunt

Horse Racing

Scratch Cards

Wheel

Plus a full PvP / duel suite — War Duel, RPS Duel, Coinflip Duel & two Penalty duels with equity abandonment settlement.

Browse the full catalogue →

Why operators integrate once

Built for speed, custody-safety & scale

A pure-Go engine that never touches player money. You keep the wallet; we return math you can audit.

01

Provably fair, publicly

Every outcome is HMAC-SHA256(server_seed, client_seed:nonce). Players verify any historical round at a public endpoint — no account needed. Full seed rotation & audit trail.

02

Sub-3ms settle

Go backend + gRPC wallet (~0.5ms) + in-memory cache. A full bet round-trip — debit, play, settle — lands under 3ms, including both wallet operations.

03

Your wallet, zero custody

We never hold balances. Integrate GetTransaction for reconciliation and Atomic SettleBet to debit-and-credit in one call — halving wallet round-trips on most games.

04

Dynamic RTP, per launch

Set RTP per game from 85–99% at game-init; the exact value is snapshotted into every round. Different players, different RTP, same integration — fully deterministic.

05

REST for bets, gRPC at the edge

One /api/v1/bet for all 68 games. gRPC + mTLS for wallet and provisioning, with a per-operator edge and IP allow-listing.

06

Backoffice & GGR analytics

Round forensics, per-game/currency/site GGR reporting and real-time network health — every round streamed to analytics with environment and RTP tagged.

07

Operator risk controls

Set min & max stake and a max-payout cap per game and per currency — with per-launch overrides. Enforced server-side: a tampered client can never stake or win beyond your limits.

08

Fiat, crypto & 8 languages

16+ currencies including crypto (BTC, USDT) at token-native precision, and a player client localized in 8 languages — EN, TR, PT, ES, DE, FR, IT, RU.

Integration

Live in three steps

1

Launch the sandbox

Instant sandbox access with play money. No contract, no card to start building.

2

Connect your wallet

Implement GetTransaction and SettleBet over gRPC. Run the conformance suite to all-pass.

3

Go live

Fill production wallet + webhook, request go-live, and pass game ID + stake to /api/v1/bet. Done.

place-bet.js
// 1 · your backend calls FastGamesAPI
const res = await fetch("https://api.fastgamesapi.com/v1/bet", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "X-User-Id":     "user_12345",
  },
  body: JSON.stringify({
    game_id:  "dice",
    currency: "USD",
    stake:    10.00,
    target:   49.5,
    side:     "under",
  }),
});

// 2 · RGS validates, calls your gRPC wallet,
//     settles atomically, returns the round
const round = await res.json();
console.log(round.payout);      // 19.80
console.log(round.server_seed); // verifiable

Provably fair

The house edge, in writing

Every multiplier is an exact integer fraction. Every outcome is a hash your players can verify — publicly, without an account.

1

Commit

Before any bet the player sees sha256(server_seed). The outcome is locked before play begins.

2

Play

Results come from HMAC-SHA256(seed, client_seed:nonce) — deterministic, replayable, impossible to influence from the browser.

3

Reveal & verify

Seed rotation reveals the server seed. Anyone can recompute any historical round at /api/v1/seed/verify.

— Sample paytable lines —

Dice · under 50.001.98× (9900 / 5000)

Barbut · şeş-beş17.82× (3564 / 200)

Baccarat · banker1.95× (39 / 20)

War · first-deal1.96× (RTP 98.12%)

RTP configurable 85–99% per game · snapshotted into every round · never exceeds 100%

Commercials

One catalogue, your choice of model

Pick the commercial that fits your book. Admin-set per operator — switch as you scale.

Model A

Flat platform fee

A predictable monthly fee for a granted game set. Best when you want fixed cost and full margin upside.

Admin-granted game categories
Unlimited rounds, all currencies
No revenue share on winnings

Model B

GGR revenue share

We share your gross gaming revenue — low fixed cost, aligned incentives, scales with your growth.

Transparent per-round GGR reporting
Analytics by game, currency & site
Start small, no heavy commitment

Want it on paper for the deal desk? Open the brochure → (PDF) · one-pager · full catalogue

The house
always settles.

Every game your players want

Built for speed, custody-safety & scale

Provably fair, publicly

Sub-3ms settle

Your wallet, zero custody

Dynamic RTP, per launch

REST for bets, gRPC at the edge

Backoffice & GGR analytics

Operator risk controls

Fiat, crypto & 8 languages

Live in three steps

Launch the sandbox

Connect your wallet

Go live

The house edge, in writing

Commit

Play

Reveal & verify

One catalogue, your choice of model

Flat platform fee

GGR revenue share

Ready to launch your
gaming platform?

Every game your players want

Built for speed, custody-safety & scale

Provably fair, publicly

Sub-3ms settle

Your wallet, zero custody

Dynamic RTP, per launch

REST for bets, gRPC at the edge

Backoffice & GGR analytics

Operator risk controls

Fiat, crypto & 8 languages

Live in three steps

Launch the sandbox

Connect your wallet

Go live

The house edge, in writing

Commit

Play

Reveal & verify

One catalogue, your choice of model

Flat platform fee

GGR revenue share

Ready to launch yourgaming platform?

Ready to launch your
gaming platform?