More strategy tips:
- You'll see bullets and homing bullets appear out of nowhere. That indicates an alien will appear there about 3 seconds later (usually with a 2nd alien nearby). Shoot there in anticipation of them.
- Shoot homing bullets (purple ones) by "leading them" then moving backwards and then shooting them when they are above you.
- Back up slowly to move aliens off into the top "radar" area. Do this only until you see an alien appear off the bottom of the screen. From that point on, you're out of room to keep moving them off the top, so you have to shoot the ones in the active area.
- When you shoot the planet, all aliens stop shooting, but existing white bullets will keep moving. Homing bullets disappear. Use this knowledge to your advantage. Grab the space man and shoot as many aliens as possible.
- The moon always appears on the left side the first time, and on the right when it reappears after "missing" it.
- After doing the spaceman bonus, shoot all remaining aliens ASAP in order to maximize your time bonus.
- Aliens go through 4 stages with increasing "agression". The bright green guys like to shoot a lot, so move them off the screen if you can't shoot em.
- The purple saucer is hard to shoot if you "chase" it. Try to stay put and shoot straight up so it moves into your line of fire.
- After the second "wave" style level, you're best off just shooting most aliens appearing since there's too many to effectively move them off the top of the screen and wait.
- Hyperspace also causes all shooting to stop. You're best off hyperspacing while moving forward at a decent speed. If you're not moving, you'll just re-appear among aliens and get shot.
- If you have offset buttons on your cp, use a layout like the arcade:
o fire O
o warp | joy
Fire really fast with index finger and keep thumb hovering over warp.
** Lastly, once you get a hang of the game, and how the aliens always appear in the same patterns, you'll want to jack the difficulty setting up to 5 or 6. Makes the game more challenging.**