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Megatack

  1. Game infos
  2. Sound
  3. Driver
  4. Inputs
  5. Controls
  6. Display
  7. Dipswitchs
  8. Roms list
  9. Chips list
  10. Categories
  11. MAMEinfo
  12. History
  13. High scores
Download megatack.zip (18 KB)
Snapshot

Game infos

Description Megatack
Name megatack
Manufacturer Game Plan (Centuri license)
Year 1980
Runnable yes
System arcade /
Number of players 2P alt
Added to MAME .031
Romset size 18 KB
Romset file 9 files
Romset zip 11 B
Language English
Evaluation 50 to 60 (Not Good Enough)
Genre Shooter

Sound infos

Sound_channels 1

Driver infos

Driver status good
Driver emulation good
Driver color good
Driver sound good
Driver graphic good
Driver cocktail
Driver protection
Driver savestate yes

Inputs infos

Input service yes
Input tilt yes
Input players 2
Input buttons
Input coins 3

Controls infos

type ways minimum maximum sensitivity keydelta reverse
joy 2 no

Display infos

type rotate flipx width height refresh pixclock htotal hbend hbstart vtotal vbend vbstart
raster 0 no 256 256 59.196429 5834400 352 0 256 280 0 256

Dipswitchs

Roms list

console name bios size crc md5 merge sha1 region offset status optional
arcade megatsnd.e1 2048 0c186bdb 233af9481a3979971f2d5aa75ec8df4333aa5e0d audiocpu e000 good no
arcade megattac.e1 2048 d9996b9f e71d65b695000fdfd5fd1ce9ae39c0cb0b61669e maincpu f800 good no
arcade megattac.e2 2048 33fa5104 15693eb540563e03502b53ed8a83366e395ca529 maincpu c000 good no
arcade megattac.f1 2048 c93a8ed4 c87e2f13f2cc00055f4941c272a3126b165a6252 maincpu f000 good no
arcade megattac.f2 2048 af5e96b1 5f6ab47c12d051f6af446b08f3cd459fbd2c13bf maincpu c800 good no
arcade megattac.g1 2048 eed75ef4 7c02337344f2716d2f2771229f7dee7b651eeb95 maincpu e800 good no
arcade megattac.g2 2048 670103ea e11f01e8843ed918c6ea5dda75319dc95105d345 maincpu d000 good no
arcade megattac.j1 2048 3b1d01a1 30bbf51885b1e510b8d21cdd82244a455c5dada0 maincpu e000 good no
arcade megattac.j2 2048 4573b798 388db11ab114b3575fe26ed65bbf49174021939a maincpu d800 good no

Chips list

name tag type clock
AY-3-8910A aysnd audio 1789772
M6502 audiocpu cpu 894886
Speaker mono audio

Categories

MAMEinfo

0.31 [Chris Moore]


WIP:

- 0.78u5: Added dipswitches 'Sound Test A0-6/B0-7' and 6x 'Unused'. Changed AY-3-8910 clock speed to 1789500 Hz. Changed description to 'Megatack'.

- 0.33b5: Santeri Saarimaa added high score saving to MegaTack.

- 3rd June 1998: Santeri Saarimaa fixed MegaTack dipswitches & input ports.

- 0.33b3: Chris Moore added accurated colors and M6502/AY8910 sound to Megatack.

- 0.31: Chris Moore added 'MegaTack' (GamePlan 1980).


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History


Arcade Video game published 39 years ago:

Megatack (c) 1980 Centuri.

SINGLE PLAYER GAME

The game-play sequence in MEGATACK consists of 4 or 5 turns (operator selectable) each of which lasts as long as the player can skilfully maneuver his spacepod to avoid destruction. When he loses a spacepod, the GIP message reappears, accompanied by the GIP sound, and displays the number of spacepods left. After the last spacepod is destroyed, the game-over sound is heard and the game-over message is displayed.

Assuming a (4) pod game, play begins with player-scores (00000) and at the top and the (3) best scores displayed across the bottom Eight (8) monsters appear in the upper portion of the screen and move towards the bottom, while dropping their bombs. The player uses his joystick control to move his spacepod across the bottom of the screen. The spacepod will start with the number (4) in the center and the number will decrease each time a spacepod is destroyed so that the number (1) will be in the center on the last round.

As the spacepod is moved across the bottom of the screen the player fires his laser energy-beams towards the left, right, and straight-up accompanied by an echoing laser sound effect. The laser beams have unlimited range, covering the entire play-field, and each spacepod has an unlimited number of shots. The (3) laser beams are fired simultaneously. Each fire-button must be released and pressed again to fire a second shot. Also, there is a slight "reload" delay so that beams cannot-be fired too rapidly.

Whenever a laser beam strikes a monster or a bomb, it explodes with a visual flash and an audio blast. If a monster is blasted, the player is awarded a 'kill' and his score is increased by the appropriate score (per the scoring menu when a bomb is blasted, no points are scored.

When a spacepod is hit by a bomb, it explodes with a growing flash and a reverberating blast. When the spacepod gets too close to a monster, the monster jumps up and sporadically devours it while growling and burping, if a monster reaches the bottom, it bounces across the bottom in an attempt to devour the spacepod.

When all the monsters in a given round have been destroyed the screen will turn into a starfield, and small space rings will appear, which if not shot at, hit, and destroyed will grow in size. If any one (1) ring is allowed to reach a predetermined size, it will de-activate the spacepods laser gun, which during these rounds only fires straight up, lift the spacepod off the bottom of the screen, absorb it and then disappear (shrinking in size), thus ending the round. The next round begins with the next wave of monsters. This starfield round occurs between every wave of monsters, and if the player is successful in destroying all the rings the next wave of monsters will then appear.

When the spacepod is finally destroyed either by being absorbed, hit by a bomb or devoured by a monster the round is over and the video image returns to the GIP display flashing player (1) up and displaying the remaining spacepods the screen then goes black again and this time the pod with the number (3) in the center appears at the bottom of the screen and play continues as before.

During play there are always (8) monsters (max) on the screen, however the monsters attack in waves of 25, after each multiple of 25 kills the starfield or space ring round will appear with each ring worth the same score as the monsters were worth in the previous screen display. The monsters that reappear after each space ring round are a new shape, and color and score more points, and drop a different color bomb, any monsters left at the end of a round will reappear at the beginning of the next round. At the beginning of the game the action is rather moderate to allow new players an opportunity to develop a 'feel' for the game. In each succeeding wave of monsters, the bombs begin to fall at an increased rate and the monsters motions are increased.

All of these features combine to make MEGATACK satisfying for the novice, challenging for the expert, and profitable for the operator.

TWO-PLAYER MODE

The play of MEGATACK in a two-player game is identical to single-play with the players alternating turns. On the Upright Version, the players use one common set of controls. On the cocktail version there are two sets of controls on opposite sides of the table. The computer activates control alternately between player 1 and 2 and flip-flops the screen image so that it is oriented to the player in control.

The GIP message, which appears after each turn, clearly indicates which player is up by flashing it in the player's color. This also allows time for the players to position themselves at the controls, but is brief enough to avoid unnecessary "dead-time". The use of two different player-colors eliminates any confusion as to which player is in control.

- TECHNICAL -

Main CPU : MOS Technology M6502 (@ 894.75 Khz)
Sound CPU : MOS Technology M6502 (@ 894.75 Khz)
Sound Chips : General Instrument AY8910 (@ 1.7895 Mhz)

Screen orientation : Horizontal
Video resolution : 256 x 256 pixels
Screen refresh : 57.00 Hz
Palette colors : 8

Players : 2
Control : 2-way joystick
Buttons : 1 (FIRE)

- TRIVIA -

Licensed to GamePlan.

Tim Sobol holds the official record for this game with 553,700 points.

- CONTRIBUTE -

Edit this entry: https://www.arcade-history.com/?&page=detail&id=1603&o=2

High scores

MAMESCORE records : 02/04/2017 13:01

sawys_________________________318.800
gerhard_schindler_____________303.200
hulkiii_______________________134.400
jgabmurer______________________73.500