Up to this point you have practiced the pieces of browser game development separately: drawing shapes and images on a Canvas, animating them frame by frame, capturing keyboard and mouse input, and writing the logic that decides what happens next. This topic is about assembly — taking those separate skills and fitting them into one project with a sensible file structure, a single authoritative game loop, and clear rules for when the player wins or loses.
Assembly is where most beginner projects break down, because subsystems that worked in isolation start competing: input events fire at unpredictable times, drawing code is scattered across functions, and state is updated in two places at once. The discipline you are learning here is to keep one loop that clears, updates, and redraws every frame; to let event handlers only record intent rather than directly move objects; and to keep game state in one structure that logic and rendering both read from.
As you watch the videos below, pay less attention to the specific game being built and more to the architecture. Ask yourself: where does this project store its state? What happens exactly once per frame versus once per event? Where do collision checks and scoring live? How does the developer get the finished game onto a page so someone else can play it? Those questions map directly onto the subtopics in this module.
A fast, complete walkthrough of building a slingshot shooting game in JavaScript using the matter.js 2D physics engine, with source code provided. Based on the title and description, it covers setting up a project, creating a world of game bodies, handling mouse-based player input to aim and fire, and running the simulation and rendering loop that keeps everything moving. The compressed ten-minute format means you see the whole pipeline from blank page to playable game in one pass.
It is a useful end-to-end model of assembling a complete project rather than an isolated technique, and the mouse-driven slingshot interaction is a clear example of wiring player input into game state. The available source code lets you compare your own project structure against a working one.
A build-along tutorial that recreates the classic Space Invaders arcade game in JavaScript. A project like this typically involves drawing player and enemy entities, animating enemy movement each frame, reading keyboard input for movement and firing, detecting collisions between projectiles and targets, and tracking score along with win and lose conditions. The short runtime suggests a brisk, code-focused presentation you may want to pause and follow along with.
Space Invaders exercises nearly every subtopic in this module at once — drawing, animation, keyboard input, collision detection, scoring, and game-over logic — making it a strong template for your own integrated project.
An official Chrome for Developers overview of recent additions and improvements to the Canvas2D API. Expect a tour of newer drawing and context features, performance-related capabilities, and guidance on what the modern 2D rendering surface can do beyond the basics you have already used. It is explanatory rather than a step-by-step build.
It comes directly from the browser vendor, so it is an authoritative reference on the rendering layer your finished game depends on, and it helps you make informed choices while combining your drawing and animation systems and testing the result across browsers.
The two build-along projects show complete games assembled from drawing, animation, input, and logic, which is the core of MO5, and both demonstrate the single update-and-redraw loop pattern behind MO2. Their mouse-based aiming and keyboard-based movement illustrate the input wiring described in MO3, while the shooting and collision mechanics model the collision detection, scoring, and win/loss transitions in MO4. Watching each project take shape from an initial concept also reinforces MO1, since you can see how the designer's choices about entities, rules, and state structure shape the code. The Canvas2D update video supports the rendering foundation for MO2 and MO5, and gives you an authoritative reference point when debugging or presenting your finished game.
These videos were chosen from YouTube on October 3, 2026. Each has captions; the player turns them on. Videos on YouTube can be changed or removed — if one no longer plays, tell your instructor. If a player does not appear, use its Watch on YouTube link.