About Space Invaders

CX-5204. Rarity 1 Common. North America NTSC. 1 player or 2 players alternating.
Aliens march in formation in the sky. Left, down, right, down, repeat. The less of them in the sky the faster they go. They will all shoot you, so shoot them all first. You can hide under shields until enemy fire (or your own) has destroyed them.

Features:
Fast bomb mode
Homing bomb mode
Aliens start off-screen

Controls:
The Trak-ball option offers better movement control than the joystick option.

Sound:
As usual, sound indicates the current speed of the invader. An added feature is that volume is louder, if aliens are closer.

Hints:
Eliminate an entire column on the edge of the formation and it will take longer for the formation to advance towards earth. The trade-off is, they get to shoot at you for a longer amount of time.
Try not to leave one lone alien, as it will move vary quickly and be hard to shoot. Instead try and line up two aliens next to each other, then shoot them both in rapid succession.
Always have a better player nearby to shoot that last ship for you if the above trick fails.

Trivia:
To date (2007-08-07), there have been no hacks to improve this version of Space Invaders