Planet Buster is an idle casual space-themed clicker game published by Azgames and released on October 6, 2025. You control a missile base targeting planets across the galaxy.

Each planet is made up of distinct layers — crust, mantle, and core — and your job is to blast through them all until the core erupts in a spectacular explosion. What makes this free online game deeply satisfying is the incremental upgrade loop. Every missile impact earns coins.

Every coin funds upgrades — more power, faster spawn rates, stronger gravity effects, better accuracy, and even offline earnings that progress while you're away. After clearing several planets, boss fights appear with reinforced crusts that test your entire arsenal.

Defeating bosses unlocks new galaxies with unique visuals and new missile types with greater destructive power. This browser game transforms simple clicking into a cosmic progression engine as an HTML5 experience that runs instantly on any device.

The control scheme is deliberately simple — click or tap to destroy. The strategic depth comes entirely from how you spend your earned coins across the upgrade system.

Every session in Planet Buster follows a satisfying destruction cycle: Each planet isn't a single health bar — it's a layered structure: As you progress, planets gain thicker layers, higher durability, and resistance to standard missiles.

This layered design creates a visible, satisfying progression as you watch each planet crack and crumble piece by piece under your bombardment. Upgrades are the strategic backbone of Planet Buster.

Each upgrade is permanent and stacks over time, making every session build on the last: The interplay between these five upgrades creates genuine strategic choices. Power maximizes per-hit damage. Spawnrate maximizes hits per second. Gravity amplifies the effect of both.

Accuracy on Tap rewards active play. Offline Earnings rewards patience. You start with a basic missile, but as you clear planets and defeat bosses, you unlock increasingly powerful missile types.

Each new missile offers different destructive characteristics — some hit harder, some have wider blast zones, some trigger chain reactions. Clicking a missile icon activates it, adding its firepower to your bombardment.