Browser Retro Pseudo-3D Game Engine

I’m building a fully browser-based, Wolfenstein-style game maker and need a developer to craft the core engine and its accompanying website.

Core functionality
• Engine runs entirely client-side—no desktop installers, no server-side rendering. Open the URL and create.
• The editor must let users place and tweak maps, enemies, items, doors, weapons, and even set up simple missions.
• Level building should feel flexible: creators can draw on a top-down grid but may also pull in ready-made room templates, then modify as they wish.
• Finished projects publish with a single click, producing a shareable web link that anyone can load instantly in their browser. No downloads required.

Platform extras
• A visible counter on the homepage keeps track of how many games have been created with the engine and updates live.
• Every exported game shows a brief loading screen that features the engine’s logo before the gameplay begins; the logo file should be easy for me to swap later.

Acceptable deliverable
A working web application (HTML, CSS, JavaScript/WebGL or similar) packaged for simple deployment on standard hosting. The build should load quickly, support modern Chromium and Firefox browsers, and include clear developer notes so I can extend art assets and missions over time.

If you have experience with retro rendering techniques, ECS pattern, or WebGL texture management, that will definitely help us move fast.