How To Make a Colour Prediction Website (2025 Field Guide)

Written from an operator’s “we’ve done this before” point of view.

TL;DR

Building from scratch takes 8–12 weeks.
Use the proportional cost guide below to map your own budget.
API integration can go live in ~1 week (best if you already have a website).
White-label/Turnkey can go live in 1–2 weeks (best if you don’t have a site yet).
We provide live demos (frontend & admin) so you can see the real product before you decide.

Partnership terms: https://in-lotto.com/condition/

1. From Zero to Live: What the full build actually takes

Note for non-technical readers:
This section contains technical details from our past projects. If you prefer to skip, you can jump directly to Time & Cost.

Game scope we shipped

Rounds: 1-minute & 3-minute.
Bets: Colour (Red/Green/Violet) and Number (0–9).
Payout logic: even odds for colours, special odds for Violet, higher odds for numbers.
Operational KPIs: concurrent users, bets per round, D1/D7/D30 retention.

Step 1 — Product spec (≈1 week)
PRD, payout table, round flow, anti-fraud rules, reporting needs.

Step 2 — Game math & RNG (≈1–2 weeks)
Target RTP window (e.g., 92–96%), long-run simulations, server-side seed, hash signing, audit logs.

Step 3 — Tech & infra (≈1–2 weeks, in parallel)
FE: React/Next.js (mobile-first, fast iterations).
BE: Go or Node/NestJS (we lean Go for high concurrency).
DB: PostgreSQL (transactions), Redis (cache/queues).
Deploy: AWS Mumbai + Cloudflare, CI/CD, logs/APM/alerts.
Security: WAF, rate-limit, signed requests, IP allowlist.

Step 4 — Wallet & payments (≈1–2 weeks)
Main wallet + game debit/credit, idempotent transactions, day-end reconciliation, limits & velocity checks.

Step 5 — Admin for operations (≈2–3 weeks, in parallel)
Roles/permissions, bonuses & cashback, missions, ticketing, device fingerprinting, black/whitelists, live & batch reports (retention/ARPU/bet volume), banners/popups, A/B flags.

Step 6 — Testing & soft-launch (≈1–2 weeks)
Unit/E2E tests, load tests at draw peaks, 5% canary release, fallback playbooks (result service degrade, payout retry queue, payment rollback).

2. Time & Cost (Proportional View)

Use these percentages to size your budget.

Based on India Lotto’s past development projects, a complete build can range between ₹800,000 and ₹2,000,000, depending on scope and complexity.

Development team — 55%
Design & UI/UX — 8%
Testing & QA — 6%
Cloud & infrastructure — 5%
Third-party services & licenses — 3%
Legal & compliance — 6%
Risk reserve — 17%

Timeline guide

Custom build: ~8–12 weeks to a stable V1.
API integration / White-label: 1–2 weeks to go live (fewer unknowns, faster approvals).

3. Simple Solution Comparison

Option	Launch Time	Best For
API Integration	~1 week	Website owners who want to add games quickly
White-Label / Turnkey	1–2 weeks	New operators without a website
Custom Development	8–12 weeks	Operators with large budgets & in-house tech resources

4. Short note after the table

If you build it yourself, watch for…

Longer timeline: expect 2–3+ months and schedule slips.
Hidden costs: beyond coding—cloud, testing, compliance, risk, monitoring.
Hard parts: game math, verifiable RNG, anti-cheat, idempotent accounting.
Ongoing load: updates, bug fixes, server ops, payment incidents, fraud reviews.

If you let us handle it, you get…

Speed: live in as little as 1 week after signing (API) or 1–2 weeks (turnkey).
Coverage: frontend, backend, games, wallet integration, reporting—end to end.
Proof & peace of mind: we already work with multiple operators; stability and safety are proven.
Try before commit: real frontend & admin demos.
Clear terms: see https://in-lotto.com/condition/.

5. What exactly you can integrate from us

A. Game API (fastest if you already have a site)

Rounds: 1-min / 3-min, Colour + Number bets, targetable RTP.
Endpoints: create round, place bet, settle, query; webhooks for results & payouts.
Wallet linking: transfer in/out with limits & velocity checks.
Sandbox with test funds, logs & signatures for your audits.

B. White-Label / Turnkey (best if you don’t have a site)

Frontend: multi-language, mobile-first, banners/popups/announcements.
Admin: users/KYC, bonuses/cashback, missions, ticketing, black/whitelists, device fingerprints, live dashboards & exports, optional jackpot/referrals.
Fast launch: brand (logo/colors/domain) swap and go.

Ask us for demo accounts (frontend & admin) to review the real screens and reports.

6. Go-Live Checklist (save this)

Legal & policy: T&Cs, Privacy, 18+ & Play Responsibly labels, KYC/AML.
Payments: deposit/withdraw flows, retry logic, daily reconciliation.
Security: WAF/TLS, admin 2FA, privileged-action audit logs.
Monitoring: CPU/memory, latency, error rate, on-time draw %, payout success %.
Support: refund/escalation SOPs, ban/unban flow, maintenance notices.
Growth ops: onboarding missions, loss/win streak buffers, D1/D7 retention tracking, channel attribution & rev-share.

7. Common pitfalls

Timer drift: enforce NTP, use a “draw lock window” to freeze late bets.
Double payouts: all money ops must be idempotent with unique keys.
Result trust: keep signed seeds/hashes and immutable logs; support will need them.
Promo blow-ups: cap bonuses with high-odds bets to avoid risk leakage.
Slow dashboards: separate real-time vs batch analytics; keep ops boards <10-minute delay.

8. Picking your path

Want proof of demand fast? → API Integration (keep your site, add the game).
No site yet but ready to operate? → White-Label/Turnkey (operate day one).
Own everything, long-term asset? → Custom build (budget & team required).

9. Start here (Demo / Access / Terms)

Need demo accounts (frontend & admin) or API docs + sandbox keys?