Forty invaders come down the screen in five rows of eight. Your ship fires on its own, so the whole game is where you put it. You have three ships, four bunkers, and capsules to catch on the way.
Drag a finger anywhere on the board and the ship follows it. You can also hold the on-screen ◀ and ▶ buttons, or the arrow keys, or A and D. Left and right held together cancel out.
There is no fire button. The ship shoots whenever it can. Three of your shots can be in the air at once, with a short wait between them, so a wasted shot still costs you.
The formation steps sideways. At the edge it drops a row and turns round. Every invader you shoot makes the rest step faster.
An invader in the back row is 30 points. The two middle rows are 20 and the two front rows are 10. A shot always hits the lowest invader in its path.
The lowest invader in a column drops them, and at most four are falling at once. One that lands on you costs a ship. Everything stops for about a second and a half, then you are back in the middle.
Four bunkers stand between you and the formation. Every shot that hits one takes a piece out of it, yours as well as theirs. Invaders that get low enough grind through them. Bunkers are never rebuilt.
On average one invader in twelve drops a capsule when you shoot it. Only one capsule falls at a time. Catch it for 25 points and a power: T fires three shots side by side, R lets six shots fly and halves the wait, S takes one hit for you, F freezes the formation, and ♥ is another ship, up to five. T, R, S and F last about ten seconds.
A saucer crosses the top of the screen about every 25 seconds. Shooting it pays 50, 100, 150 or 300 points, chosen at random, and it drops a capsule unless one is already falling.
Clear all forty and you bank 100 points. The next wave starts lower and moves faster. Your bunkers keep their damage and your powers keep running.
You lose your last ship. Or the formation reaches your row, which ends the run at once however many ships are left. A run also stops after 15,000 ticks of the game clock, which is about fifteen minutes.
| What you shot | Points |
|---|---|
| Back row: 8 invaders at 30 | 240 |
| Two middle rows: 16 invaders at 20 | 320 |
| Two front rows: 16 invaders at 10 | 160 |
| Clearing the wave | 100 |
| The wave | 820 |
Saucers and capsules come on top of that. A saucer is 50 to 300 and every capsule you catch is 25, whether or not you needed its power.
A freeze is the best time to shoot. The formation stops marching and stops dropping new bombs, but bombs already in the air keep falling, your shots still land, and the saucer still flies.
Free, and no account needed. Opening the game seats you as a guest, and the run starts when you press Start.
one of the games in the Arcade.