game
icon
title Astro Invader
set name astinvad
manufacturer Stern
year 1980
genre Shooter (hof)
category Shooter / Gallery (hof)
driver status good
driver source astinvad.c
snapshots MW: in game | parent / CT: in game | title | artwork | parent
zoom
rating

73.1% after 41 votes
 
parent Kamikaze
other clones Kosmo Killer
display
colour emulation good
palette 0
display type raster
orientation vertical
resolution 224x256
frequency 60.000000Hz
sound
sound emulation good
channels mono
samples 0.wav
1.wav
2.wav
3.wav
4.wav
5.wav
6.wav
7.wav
8.wav
controls
players 2
nplayers 2P alt
controls 2 way joystick
buttons 1
coin slots 1
hardware
cpu Z80 @ 2MHz
audio Samples
data
version added .031
last change(s) .117u1
roms
name size crc set flags sha1
ai_cpu_1.rom  1024  20e3ec41  astinvad    7e77fa3c51d1e83ce91a24808301d9f1e0bed18e 
ai_cpu_2.rom  1024  e8f1ab55  astinvad    b3e38f2d6bdb65ee7c53c8d5dd3951a3fd43c51c 
ai_cpu_3.rom  1024  a0092553  astinvad    34fced8ce06d912980ba45fad8d80d2a2e3357b9 
ai_cpu_4.rom  1024  be14185c  astinvad    59ecf450682dab9840c891c18ccda1d5ec4cc954 
ai_cpu_5.rom  1024  fee681ec  astinvad    b4b94f62e598030e6a432a0bb83d18d0e342aed9 
ai_cpu_6.rom  1024  eb338863  astinvad    e841c6c5903dd6dee9ec2fedaff431f4a31d738a 
ai_cpu_7.rom  1024  16dcfea4  astinvad    b6a0e206a604297f548ac4658664e98b2d04f75f 
ai_vid_c.rom  1024  b45287ff  kamikaze    7e558eaf402641d7ff60171f854030219fbf9a59 
cabinet art
additional information
info 0.117u1 [Lee Taylor]

0.31 [Lee Taylor]

Samples required (Space Invaders)

TODO:
  • Add better sound/samples
WIP:
  • 0.123u3: RansAckeR added DIP locations to clone Astro Invader.
  • 0.122u6: Aaron Giles fixed clone Astro Invader is not supposed to flash when the little "boogers" hit the ground.
  • 0.117u1: Astro Invader (astinvad) is now a clone of Kamikaze.
  • 0.101u4: David Haywood added clone Kosmo Killer.
  • 0.64: Changed visible area to 224x256.
  • 17th January 2003: Stefan Jokisch fixed the crash in Space Intruder, added sample support and cocktail mode support to it, and fixed the red screen effect in Astro Invader.
  • 0.61: Changed visible area to 208x240.
  • 15th March 2000: Zsolt Vasvari fixed the colors in Astro Invader.
  • 0.36b11: Added prom ($0 - 1024 bytes) and dipswitches 'Cabinet' and 'Freeze'.
  • 2nd March 1999: Juergen Buchmueller fixed Astro Invader and his clone Kamikaze. He also updated the CPU interface, resulting in a little speed boost.
  • 0.34b8: Howie Cohen added hiscore save in Astro Invader.
  • 0.33b6: Moved Astro Invader and clone to the z80bw.c driver.
  • 0.31: Lee Taylor added Astro Invader (Stern 1980) and clone Kamikaze (Leijac Corporation 1979).
LEVELS: 1 (endless)

Other Emulators:
  • HiVE
Recommended Games (Defence):

Cosmic Guerilla

Galaxy Wars

Space Guerilla

Space Launcher

Kamikaze

Missile Command

Arcade Classics (Missile Command II)

New York New York

Space Zap

Colony 7

Dark Warrior

Demoneye-X

Enigma II

Orbitron

Pleiads

Satan of Saturn

Satan's Hollow

War of the Worlds

Tactician

Raiders

Senjyo

Son of Phoenix

D-Con

Alligator Hunt

Romset: 9 kb / 5 files / 5.73 zip
history Astro Invader (c) 1980 Stern Electronics.

Astro Invader is a simple 2-D shooter. You control your laser base against an endless stream of alien invaders. The invaders don't come in set waves, instead, they come in a constant stream. Once you have gotten through one barrage of aliens, more are just behind to continue the action. Your job is to keep them from overwhelming you with their superiority in numbers. Kill or be killed, that is the objective.

Astro Invader is one of the follow-up games that rode on the wave of the "Space Invaders" craze. The game itself is simple in concept but the action gets fast paced, real quickly. Especially since several things can be going on at the same time during the game.

- TECHNICAL -

Main CPU : Z80 (@ 2 Mhz)
Sound Chips : Samples

Screen orientation : Vertical
Video resolution : 224 x 256 pixels
Screen refresh : 60.00 Hz
Palette colors : 8

Players : 2
Button : 3
=> LEFT, RIGHT, FIRE

- TRIVIA -

Released in June 1980.

This game is also known as "Kamikaze" (Leijac).

Although all the screen colors are generated by the game's hardware as opposed to a screen overlay, there are varying bands of color dependent upon where the aliens are displayed vertically. At different heights, the aliens and their saucers are displayed in various colors. When a player's ship is destroyed, the entire display is drawn in red.

This game appears in Tom Petty and the Heartbreakers music video for the song 'You Got Lucky' (1982).

Fred Pastore of Medford, Massachusetts, holds the official record for this game with 56,330 points on June 4, 2006.

An Italian bootleg of this game is known as "Kosmo Killer".

- SCORING -

Alien spacecraft, not moving, in their stalls : 10 points
Alien spacecraft moving into stalls or dropping toward you : 20 points
UFO : 100, 200, 300, or 400 points.

- TIPS AND TRICKS -

* When you start the game, your base will be in the middle, at the bottom of the screen in the area in between the stalls. When the game starts, a large UFO will enter the top of the screen. It will have the number 200 in it. That is how many alien spacecraft that 'mother' ship is going to attack you with. The 'mother' ship will land on the platform and the game will commence or continue. When the 'mother' ship expends all 200 of its ships, all gameplay freezes and a new 'mother' ship will enter with 200 more alien spacecraft. This cycle will keep going until you lose all of your bases.

* A stall will hold 4 invaders. If you haven't reduced that number down, the 5th invader on will drop to the ground. When an invader hits the ground, it just doesn't hit, it produces a blast radius a little wider then the stall it fell from. Your laser base can be destroyed by this 'indirect' fire.

* Just as deadly are the UFO's that show up. They can appear out of any of the open areas (as denoted in the playing field). They don't shoot or look threatening. The problem is, when they land on the ground, your base will be destroyed.

* The ''mother'' ship starts to distribute invaders starting with stall number 1 and works from left to right. Then it works from right to left and so on. The pattern is like this: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 2... As you can see, the right side will fill up quicker if you don't act quickly. This only works on odd numbered boards. On the even numbered boards, the 'mother' ship will stack the invaders on the same side as your laser base.

* The best strategy for this game is to keep the middle as open as possible. Keep stalls 4, 5, 6, and 7 as cleared of invaders as possible. Prevent these stalls from building up there maximum of 4 invaders. This will give you some breathing room plus it will help when dealing with the UFO's that come down on the left or right sides.

* There is a pattern on how the invaders are distributed. Use this knowledge when you are moving along the bottom of the screen. If you have stalls topped off and invaders are dropping, watch which way the 'mother' ship is distributing the aliens. If it is from right to left, then the aliens will fall from the farthest stall away from you and come inward. If it is from left to right, then the invaders will fall away from you. This is good if you are trying to make it to one side or the other to know how the invaders are falling.

* You can shoot the aliens that are falling but keep in mind, there probably is another that is on the left or right side that will hit the ground. Given that the blast radius is wider then the stall, it's better to let it go. Just keep the stalls (especially 4, 5, 6, and 7) cleared as best as possible.

* When the 'mother' ship is down to its last few invaders, make sure you are not in a position to get blasted the moment the new 'mother' ship arrives to continue the action. Nothing like having an falling invader inches from your laser base and the action pauses only to unpause and you get your base destroyed.

* Although the UFO seems to come out at random times and places, there does appear to be a pattern. It seems to come down the center mostly but it also has a pattern as to when it comes down the right and left sides.

- SOURCES -

Game's rom.
Machine's picture.
F.A.Q. by Kevin Butler A.K.A. War Doc
resource links view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
view in arcade-history.com
view in arcade-history.com
view in arcade-history.com
view in GameFAQs
view in GameFAQs
view in KLOV
view in KLOV
view in KLOV
view in System16
view in System16
view in System16
view in System16
view in The Arcade Flyer Archive
view in The Arcade Flyer Archive
view in VGMuseum Gamepics
view in VGMuseum Gamepics
cheats
cheats
code comments
00000000:1F9D:00000099:FFFFFFFF  Infinite Credits
00000000:1D01:00000008:FFFFFFFF  Infinite Lives
00000000:1CD8:00000000:FFFFFFFF  Invincibility
00000000:1CE0:00000000:FFFFFFFF  Rapid Fire
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