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| 1978

Release type:
Units produced: Atari
Controls/Input Device: Control(paddle), Buttons(1)
Number of Players: 1
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Mono
More Graphics/Artwork:
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Acting Talent involved:
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Game Awards Nominations:
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Title a.k.a.:
Avg. Playtime:
MAME folder name: avalnche

Display: raster 256x240 @ 60.00Hz (60.00 pixclock)
Sound: 1 channels

Emulated in MAME via driver avalnche.c:
Status: good; Emulation: good
Graphic: good; Sound: good; Color: good
Palette size: 0; Savestate: unsupported

30611.c2 with 2048kb
sha1:5a1a873b14e63dbb69ee3686ba53f7ca831fe9d0 crc:0ad07f85
30612.d2 with 2048kb
sha1:afe680865da97824f1ebade4c7a2ba5d7ee2cbab crc:3f975171
30613.e2 with 2048kb
sha1:9feb7444a2e5a3d90a4fe78ae5d23c3a5039bfaa crc:47a224d3
30614.c3 with 2048kb
sha1:1647d7416bf9266d07f066d3797bda943e004d24 crc:a12d5d64
30615.d3 with 2048kb
sha1:3ff4cffea5b7a32231c0996473158f24c3bbe107 crc:3e1a86b4
30616.e3 with 2048kb
sha1:7802b399b3469fc840796c3145b5f63781090956 crc:f620f0f8
Mameinfo.dat entry:
0.37b10 [Yochizo]


- 0.147u2: hap fixed clone Omega Fighter Special. The game fails to boot or finish post. After showing bad rom errors, the game resets.

- 0.147u1: Fixed maincpu rom loading.

- 0.122u7: Fixed gfx1/2/3/4/5 rom loading.

- 0.89u3: Changed Z80 CPU2 clock speed to 5MHz.

- 0.37b10: Yochizo added 'Omega Fighter' (UPL 1989) and clone Omega Fighter Special.

- 21st November 2000: Yochizo fixed some graphics bugs in the Omega Fighter / Atomic Robo-kid driver.

- 8th November 2000: Yochizo sent in a driver for Omega Fighter and Atomic Robo-kid.

- 25th April 1999: Dumped Omega Fighter Special.

LEVELS: 8 (restarts once)

Other Emulators:

* FB Alpha


* Raine

Recommended Games (Star Force):




Night Star (DECO Cassette)

Nova 2001

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Star Force

Alpha Mission / ASO

Alpha Mission II / ASO II

Astro Warrior (Mega-Tech)

Mission 660


S.R.D. Mission

Truxton / Tatsujin

Tatsujin (Tourvision PCE bootleg)

Truxton II / Tatsujin Oh

Blast Off

Blazing Lazers

GunHed (Tourvision PCE bootleg)

The Next Space

Omega Fighter

Super Star Soldier (Tourvision PCE bootleg)

Lethal Thunder


Strike Gunner S.T.G


Explosive Breaker

Final Star Force




Nebulas Ray



Viper Phase 1

Fever SOS

Mars Matrix: Hyper Solid Shooting

Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Avalanche (c) 1978 Atari.

Avalanche is a 2-D game of skill. You control a multi-storied platform with a spinner-knob. Your goal is to prevent the falling rocks from ever reaching the ground. There are six rows of rocks to deal with. You start with a 6-storied platform and you lose one platform per row of rocks cleared. You score points for those rocks you prevent from reaching the ground. Of course, the farther the row of rocks, the smaller and faster they become. Your ultimate goal is to get enough points so that you can continue your game should you lose your first one. Get your hard hat out and prepare to catch some rogue rocks.


Cabinet dimensions : 66'' (168cm) high x 26'' (66cm) wide x 27'' (68cm) deep. Monitor : 23'' B/W.

Game ID : 030574

Main CPU : MOS Technology M6502 (@ 756 Khz)
Sound Chips : Discrete circuitry.

Screen orientation : Horizontal
Video resolution : 256 x 240 pixels
Screen refresh : 60.00 Hz
Palette Colors : 2

Players : 1
Control : Rotating knob (LEFT and RIGHT)
Buttons : 1 (SERVE)

Avalanche shipped in a cool looking black and white cabinet. It has three-color painted sideart which shows a group of falling boulders. This title does not have a marquee, instead the monitor bezel extends all the way to the top of the cabinet (this game was seldom converted because of that). The monitor bezel is decorated with a brownish scene of dirt and rocks, and has a clear semi-circular are that shows the black and white monitor within. The game uses a set of color overlays to simulate color on the otherwise monochrome screen. The control panel is decorated with a brown overlay showing large cracks in the earth, and it has a single optical spinner mounted in the center, with buttons far off to each side.


Released in April 1978.

1978 proved to be a pivotal year in the arcade industry. Atari was still the big name in arcade games, but that title would soon be threatened. A relatively unknown company out of Japan called Taito partnered up with the well known company Midway in the United States. The game that took the world by storm was called "Space Invaders". It proved to be such a huge success, quarter shortages were reported due to all the gameplay. This also meant that other arcades that came out during 1978 received significantly less patronage. Therefore, Avalanche didn't do very well at the arcades. Many of Atari's games from this period were based more on the skill of the player then anything else. Although Atari released many memorable arcade games after this period, times would never be the same. With the big videogame collapse during the early 80's coupled with poor management, Atari started a downward spiral it would never recover from.

This game was released by Sidam as "Cascade".

David Nelson of holds the official record for this game with 2,453 points on March 21, 2004.


The score for each rock corresponds to its row number. Rows are numbered 1-6 starting from the lowest row and moving up. Therefore, the rocks values are :
Row 1 : 1 point
Row 2 : 2 points
Row 3 : 3 points
Row 4 : 4 points
Row 5 : 5 points
Row 6 : 6 points


* When you start the game, you will see six rows of rocks. Each row contains 32 rocks in it. At the bottom of the screen you will have your six-story platform to catch the falling rocks. Gameplay starts as soon as you press the SERVE button or after five seconds, whichever comes first. First, you must know how the game works so you can better play it :
1) You start with a six-story platform. Each time a row of 32 rocks is cleared (either by you catching it or it hits the ground), you lose one story and the remaining platform(s) become shorter.
2) Every two rows of rocks (64 rocks) become smaller then the previous two rows. In addition, they travel faster down toward your platform(s).
3) If you happen to clear out all six rows of rocks, the game will reload the top with more rocks. You will now start with a three-story platform. If you clear those rows, it will be a two-story platform. The final re-loading of rocks will give you a single platform to catch rocks with. You can only have a maximum of three rock refills (not counting the initial rocks at the beginning of the game).

* The maximum score you can get on each level is 687 points.

* When you are playing the game, only concentrate on catching the rocks with your bottom platform. If you have a multi-storied platform, you will catch a lot of the rocks before they even reach the bottom platform. Of course, in the later rows, this won't be the case.

* If you happen to get a miss, all the rocks that were falling will be placed back at the top (including the one you missed).

* Learn not to spin the control knob. This prevents you from losing control of where your platform is. Instead, learn how to turn it gently to where you need to go. There is enough time to move from side to side.

* Speaking of placement, always try to keep near the middle. That way you can react faster to where the rocks are falling instead of going all the way left or right all the time.

* Whenever you either clear a screen or get enough points for extended play, there is a couple of second delay while the board sets up.


Designed & programmed by : Dennis Koble


* Consoles :
Atari 2600 ("Kaboom!")

* Computers :
Atari 400/800 (1980, "Avalanche") by Dennis Koble
Vic 20 ("The Sky is Falling")
Tandy Color Computer 2 (1981, "Popcorn")


Edit this entry:

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
00000000 0075 0000000F FFFFFFFF Infinite Credits
00000000 0079 00000000 FFFFFFFF Infinite Lives
00000000 0014 00000001 FFFFFFFF Always have All Bats
00010000 0015 00000001 FFFFFFFF Always have All Bats (2/6)
00010000 0016 00000001 FFFFFFFF Always have All Bats (3/6)
00010000 0017 00000001 FFFFFFFF Always have All Bats (4/6)
00010000 0018 00000001 FFFFFFFF Always have All Bats (5/6)
00010000 0019 00000001 FFFFFFFF Always have All Bats (6/6)

Credit Pugsy's MAME Cheat file