💻 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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