Fast, lightweight games that run in any browser — no download needed. Casual, casino, card and multiplayer HTML5 games for web, portals and playable ads.
250+ projects delivered
HTML5 games load instantly in a browser or a mobile web view, so players can start in seconds without installing anything. Gamostar is an HTML5 game development company that builds casual, casino, card, board and multiplayer browser games with Phaser, PixiJS, Three.js and vanilla JavaScript / TypeScript.
HTML5 is ideal for game portals, websites, messaging-app mini games, playable ads and instant-play experiences. We optimise assets and code for low file sizes and smooth 60 fps performance, even on low-end phones and slow networks.
Games that work on desktop, Android and iOS browsers with responsive layouts.
Tiny bundles and lazy loading so games start in seconds.
WebSocket-based real-time and turn-based multiplayer games.
Interactive ad units that boost install rates.
Package HTML5 games as Android and iOS apps using Capacitor or webviews.
Ads, in-app purchases and portal integrations.
Add games to any site to increase engagement.
Mini games inside chat and social apps.
Branded games and playable ads.
Lightweight games for any phone.
| Framework | Best for |
|---|---|
| Phaser | 2D casual, arcade and casino games |
| PixiJS | High-performance 2D rendering and card / board games |
| Three.js / Babylon.js | 3D browser games and product experiences |
| Vanilla JS / TypeScript | Lightweight, custom games |
| Socket.io / WebSockets | Real-time multiplayer |
| HTML5 | Native / Unity | |
|---|---|---|
| Install | None — open a link | Store download |
| File size | Very small | Larger |
| Performance | Good for 2D | Best for complex 3D |
| Reach | Any browser | Store users |
| Discoverability | SEO and links | Store search |
| Project type | What is included | Typical timeline |
|---|---|---|
| White label launch | Ready-made game(s) branded to you, wallet and admin panel | Weeks |
| Custom MVP | Core game, multiplayer server, basic wallet / economy and admin panel | 3–6 weeks |
| Full custom game / platform | Complete game set, advanced backend, tournaments, analytics and store launch | 2–4 months |
Timelines depend on scope and how quickly feedback is shared. We confirm exact effort and cost after a discovery call.
A senior team that has delivered 250+ games, apps and platforms for startups and enterprises worldwide.
Weekly demos, a shared task board and clear milestones — you always know what is happening.
NDA before we start, encrypted data, secure APIs and best-practice authentication.
Full source code, design files and documentation are handed over to you.
Bug fixing, OS-update compatibility, monitoring and feature upgrades under flexible plans.
We work with clients across India, the USA, the UK, Europe and the Middle East.
We study your idea, audience and competitors, then define scope, features and a realistic roadmap.
Clickable prototypes and a polished, conversion-focused interface that you approve before development.
Short sprints with weekly demos, clean code, secure APIs, payments and third-party integrations.
Real-device testing, performance, load and security checks before every release.
Store or server launch, monitoring and ongoing maintenance after go-live.
A defined scope, timeline and price. Best for MVPs and well-documented requirements.
Developers, designers and QA working only on your product, on a monthly basis.
Flexible hourly engagement for evolving scope, audits and ongoing improvements.
Games built with web technologies that run in a browser without installing an app.
Yes. They work in mobile browsers and can also be wrapped into store apps.
Cost depends on features and art. A simple casual game costs much less than a multiplayer casino game.
Yes, using WebSockets and a Node.js backend.
Yes. Through ads, in-app purchases, subscriptions and portal revenue share.
Share your idea and get a clear plan, timeline and estimate within 24 hours. No obligation.
NDA signed on request · Full source code ownership · Weekly progress demos