Description
Space Planet Defender is a fast-paced HTML5 shooting game that puts you in charge of the last line of defence for a threatened planet. Built with pure HTML5, CSS3 and JavaScript, it runs directly in the browser with no plugins or extra frameworks, so it is easy to add to a gaming site, a portfolio or a client project.
Gameplay centres on a rotating defence cannon. You aim with the mouse, shoot down waves of asteroids and protect the planetary core for as long as you can. As the action speeds up, the challenge grows, and high-score tracking gives players a reason to come back and beat their best run.
Why it stands out
- Smooth canvas-based arcade action with responsive controls for desktop and mobile browsers
- Animated preloader, modern futuristic interface and a clean heads-up display
- Dynamic explosion effects, screen shake and procedural sound effects made with the Web Audio API
- Lives system, game-over screen and high-score tracking for replay value
- Lightweight, fast-loading code that is clean and well commented for easy customisation
What is included
The package includes the HTML, CSS and JavaScript files, image assets and documentation, making it straightforward to customise colours, difficulty and gameplay. Because it is cross-browser compatible, the same build works across modern browsers without rework.
Who it is for
This game is ideal for website owners who want an engaging interactive feature, developers looking for a ready-to-use HTML5 game template, educators exploring space and strategy themes, and freelancers or agencies who need a polished arcade game for a client site. Add it to your site and let visitors defend the planet, chase high scores and keep coming back for one more round.




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