SJ 3D Game Architecture

Yes — SJ DEV can build a full multi-file-style game architecture, not only a single HTML file.

• index.html — loading, menu, canvas, HUD, mobile controls, game over
• js/game.js — game loop and state
• js/player.js — player movement
• js/world.js — 3D world
• js/obstacles.js, coins.js, enemies.js — gameplay systems
• js/collision.js — collisions
• js/particles.js — effects
• js/audio.js — sound/music
• js/ui.js — menus/HUD
• assets/ — models, textures, sounds and music

The hosted SJ One web app can be the final playable build; a production project can also keep these systems as separate source files in your repository and bundle them for deployment.