💻 Game Development 📈 Design

How to make an online casino game?

👤 By Game Developer 📅 Updated March 2026 ⏱ 7 min read

✓ Short answer

To make an online casino game, you need game design, mathematical modeling, RNG integration, and certification from testing labs like GLI or eCOGRA. Development costs range from $20,000 for simple slots to $200,000+ for complex table games with 3D graphics.

📖 Casino game development process

Phase Description Timeframe Cost range
1 Game concept & mathematics 2-4 weeks $5,000 - $15,000
2 RNG algorithm development 3-6 weeks $10,000 - $25,000
3 Game design & artwork 4-8 weeks $15,000 - $50,000
4 Programming & development 8-16 weeks $30,000 - $100,000
5 Testing & QA 4-8 weeks $10,000 - $25,000
6 RNG certification (GLI, eCOGRA) 4-12 weeks $15,000 - $40,000

💡 Key components of casino game development

  • Game mathematics: RTP (Return to Player), volatility, hit frequency, and paytable design. Must be mathematically sound and certified.
  • RNG (Random Number Generator): Certified algorithm that produces unpredictable, unbiased outcomes. Must pass statistical tests (Diehard, NIST).
  • Certification: Games must be tested by approved labs: GLI (Gaming Laboratories International), eCOGRA, iTech Labs, or BMM Testlabs.
  • Licensing requirement: Games can only be sold to licensed operators. Your game studio must also be licensed in jurisdictions like Malta, UK, or Curacao.
  • Technology stack: HTML5, JavaScript, WebGL for browser-based games. Native apps for iOS/Android (Swift, Kotlin).
  • Backend integration: API connections for game providers to integrate with casino platforms (SoftSwiss, EveryMatrix).
  • Game providers: To distribute your game, partner with platforms like SoftSwiss, or sell directly to casinos through sales teams.

🏆 Getting started:

If you're an indie developer, start with a simple slot game using HTML5/JavaScript. Build a prototype with basic RNG and mathematics. For commercial release, you'll need certification ($15,000-$40,000) and a gaming license for your studio ($50,000+). Most new developers partner with established providers rather than handling certification alone.

🏆 Alternative path:

Instead of building a game from scratch, consider white-label game development where you license existing frameworks and customize artwork and mathematics — reduces cost by 50-70%.

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