The full game development process runs in five stages: define the core loop and player, pick an engine that fits the platform, build a prototype and then a vertical slice, test and certify, then launch into live operation. This is the полное руководство по разработке игр for teams that build or list games, and it treats real-money requirements (RNG, RTP, provably fair) as one stage among the others. For a general map of the field, see this game development process overview.
Full guide to game development starts with a defined core loop and audience
Before any code, define three things: the core loop, the target platform and the player. Everything downstream, from engine to budget to certification, is a consequence of those three answers.
Write a one-page design brief. It should hold the core loop in a single sentence (what the player does, what they get back, why they repeat it), the platform, the session length you expect, the revenue model and the one metric that tells you the game works. Add a short list of what is out of scope. Teams that skip that list tend to uncover it as schedule slip.
Then choose a format, because each one changes the work:
- Casual: short sessions, low friction, art and onboarding carry most of the weight.
- Mid-core: deeper progression and balance, so tuning and live updates become a standing cost.
- Real-money: a fixed math model, licensing, payment constraints and independent testing are part of the product from day one, not a late-stage add-on.
Test the loop on paper first. A card prototype, a spreadsheet of the paytable, or a simple dice-and-tokens simulation will show whether the loop has tension before anyone opens an engine. For a casino title, the spreadsheet is also the first draft of the math model, which you will need again at certification.
Which engine and tech stack should a game team choose?
Pick the engine that matches your target platform and your team’s existing skills. A strong engine in the wrong language costs more than a modest engine your team already knows.
| Option | Best fit | Trade-off |
|---|---|---|
| Unity | Mobile and cross-platform 2D or 3D, C# teams | Large runtime for simple projects; web builds need size discipline |
| Unreal Engine | High-fidelity 3D on PC and console | Heavy toolchain; overkill for most 2D or casual work |
| Godot | Small and mid-size teams, open-source preference, 2D | Smaller ecosystem; console export typically relies on third-party porting |
| Phaser (HTML5) | Browser delivery in JavaScript or TypeScript | 2D only; you assemble more of the tooling yourself |
Web-delivered casino games commonly use HTML5 because it runs in a browser with no install, which matters when an operator wants to add your title to a lobby with minimal friction. Slots, crash games and table games rarely need a 3D engine; they need small bundles, fast load times and clean integration with the operator’s wallet and session APIs.
Decide the backend at the same time. A real-money game needs a server-authoritative design: outcomes are generated and settled on the server, and the client only displays them. Draw-based products make the same demand, as covered in online lottery software features and tech stack. If you would rather not build that layer yourself, choosing a development partner is a stack decision too.
How do you move from prototype to a playable build?
A prototype proves the loop is fun. A vertical slice proves your production pipeline can deliver the finished game. They answer different questions, and you need both.
Greybox prototype. Use placeholder shapes, no final art, no final audio. Build only the loop and the controls or bet flow. If the greybox is not engaging, polish will not rescue it. Set a hard time limit and a clear pass/fail criterion, such as testers choosing to play a second round unprompted.
Vertical slice. Build one short section to final quality: real art, real audio, real UI, the actual server calls, and a working build you can install or load. It exposes the real cost of an asset, the real frame time on a low-end device, and whether your team’s handoffs work. Estimates made after a slice are far more reliable than estimates made before it.
Content pipelines. Agree file formats, naming, size budgets and import settings for art and audio before volume production starts. Decide who approves an asset and where it lives. A symbol sheet that arrives at the wrong resolution is a small problem at ten assets and a schedule problem at five hundred.
Version control. Use Git with large-file support, or Perforce if your repository is dominated by big binaries. Branch per feature, build on every merge to the main line, and tag every build that goes to testers. Stop there; adding more tools at this stage usually adds meetings instead of speed.
What testing and certification does a game need before launch?
Every release needs functional, performance and device testing. Real-money games also need independent verification of the math and the random number generator (RNG).
Run QA in layers. Functional passes cover every state, including interrupted sessions, lost connections and failed payouts. Performance passes cover load time, memory and frame rate on your lowest supported device. Device and browser matrices should come from your real audience, not from whatever is on the shelf. Treat тестирование игр перед запуском as a gate with written exit criteria rather than a final week of bug fixing.
For casino titles, add math verification. The stated return to player (RTP) must match what the game actually does. In practice that means simulating a very large number of rounds against your published math model and confirming that the result sits where the model says it should; see how RTP is calculated and checked for the mechanics. The RNG is then tested separately for statistical randomness and for correct, tamper-resistant use in the game logic.
Accredited test labs, such as GLI or BMM, perform this independent testing and issue the reports that regulators and operators ask for. Whether you need one, and which labs a market accepts, depends on the jurisdiction. In Great Britain, for example, start from the UK Gambling Commission requirements for gambling products, and confirm each other target market separately.
Crypto-focused titles often add player-side verification. Provably fair casino game development lets players check outcomes themselves, but in a licensed market it supplements lab certification rather than replacing it.
How should a game be launched and updated after release?
Launch is the start of live operation, not the end of development. Budget for the game you will be running a year from now, not just the one you ship.
Submission. For app stores, that means store listing, rating questionnaires and review time. For casino titles, it means integration with each operator or aggregator, delivery of certification reports, and in many cases a game-specific approval from the regulator. Build that lead time into the plan; it rarely compresses.
Analytics. Instrument the game before launch. Track retention by cohort, session length, drop-off points in onboarding, and for casino titles bet distribution and feature hit frequency. Raw install or play counts say little; the shape of the curve says a lot.
Balancing updates. Casual and mid-core games are tuned continuously: economy values, difficulty, event cadence. Real-money games are different. Changing the math model usually means a new version, retesting and, in regulated markets, fresh approval. Separate content updates, which are cheap, from math changes, which are not.
The cost of staying live. Expect recurring work: OS and browser updates, security patches, new device support, operator API changes, and compliance reviews as rules shift. A live title is a service with an owner, an on-call process and a roadmap. If you lack the capacity to run it, that is the moment to bring in a platform partner rather than let the game age.
