How to play

The mission

The nine stages visit Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and the Sun. Early stages introduce the basic alien formations. Later stages add fast attackers, homing enemies, mothership escorts, and more waves. Mars and the Sun end in boss battles.

Your main cannon fires automatically while the ship is active. Steer beneath enemies to line up your shots, move away from incoming fire, and collect falling upgrades. The HUD tracks your stage, planet, score, lives, hull, and active powers.

Controls

• Keyboard: Use A/D or Left/Right to steer. W/S or Up/Down moves vertically within the ship's three-row range. Press P to pause, M to toggle sound, and Escape during play to save and return home.
• Touch: Drag the ship across the playfield to move. A tap uses a stocked missile, or a bomb when no missile is available. Ordinary shots still fire automatically.
• Gamepad: Use the left stick or D-pad to steer. Start opens or pauses the mission; the primary face button confirms menu actions. Back/Select saves and returns home during play.

On touch-capable devices, the Control Mode menu lets you choose Auto, Touch, Keyboard, or Gamepad. Auto changes control type when the browser detects input from a keyboard or connected gamepad.

Pickups and survival

Enemies can drop labeled pickups. RPD speeds up the main cannon; TRI fires a three-shot spread; SHD protects the ship; and 1UP adds a life when available. PET brings companion ships, while MSL and BMB stock a homing missile attack or a bomb. Some effects are temporary, so the HUD shows what is currently active.

Score milestones can also award extra lives. When the hull is hit too many times, you lose a life. Finishing a stage gives you a choice to play the next stage or replay the one you just cleared.

Saves, replays, and scores

Use Home during a mission to save your progress on this device. When you return, Continue Game resumes from the saved stage. Replaying a cleared stage resets your power-ups and removes the score earned during that stage's previous run.

When a run ends, enter a pilot name to record its score. The Top 20 board and continuation save are stored in this browser, so another device will have its own records. Clearing this site's browser data removes those local records.