Built for the browser
CS Brasil is a complete single-player FPS delivered as a web page. This is how the renderer, game loop and assets fit together without a native installer.
Runtime architecture
The game is written in JavaScript and rendered with WebGL through Three.js. A fixed-step update loop keeps movement, weapons, projectiles and bot decisions consistent while the renderer follows the display refresh rate. The playable route loads as an isolated game surface only after the player presses Play, so the landing page remains light and indexable.
Renderer
Three.js draws the maps, characters, weapon models, particles, shadows and HUD-linked effects. Quality options let slower machines reduce expensive effects.
Simulation
Movement, collision, weapon timing, damage, teams and round state run locally. A match does not require an account or a remote game server.
Persistence
Language, controls and graphics preferences are stored in the browser. Clearing site data returns them to defaults.
Bots and navigation
Bots evaluate targets, line of sight, distance and cover while moving through map navigation data. Their job is not to imitate a competitive human player perfectly; it is to keep every map immediately playable offline and to create readable firefights for a first visit.
Assets and loading
Models and textures are loaded in stages. The first interaction also unlocks browser audio, a requirement imposed by modern autoplay rules. Map previews are ordinary images, so visitors and crawlers can inspect the arenas before downloading the heavier 3D assets.
Performance envelope
- The marketing and guide pages do not load the Three.js runtime.
- The game bundle starts only after Play and remains in the same page session.
- Fullscreen uses the entire viewport and leaves the advertising rail behind.
- Desktop is the primary target; mobile visitors receive the guide and an explicit device notice.
Open-source foundation
The source code is available under the GNU Affero General Public License v3.0. The project builds on Three.js and other open-source components whose notices remain with the distribution. Brand artwork and third-party media are separate from the software license; this site uses the CS Brasil identity and only the assets cleared for this deployment.