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Invinco / Head On 2

| 1979

Release type:
Units produced: Sega
Controls/Input Device: Control(joy4way), Buttons(2)
Number of Players: 1
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Mono
More Graphics/Artwork:
More Music/Sound:
Acting Talent involved:
More Machine Details:
More System Details:
Game Awards Nominations:
Game Awards Won:
Title a.k.a.:
Avg. Playtime:
Similar Games:
MAME folder name: invho2

Display: raster 256x224 @ 60.00Hz (60.00 pixclock)
Sound: 1 channels

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

271b.u33 with 1024kb
sha1:6ff1050d84b6b7a006762c35e0b3d2befb0f90d6 crc:44356a73
272b.u32 with 1024kb
sha1:134f081c62173fab80b46918e4a073cf5f72df77 crc:bd251265
273b.u31 with 1024kb
sha1:2790fb45233c8d6e74a56fcdfde1c468926d44d2 crc:2fc80cd9
274b.u30 with 1024kb
sha1:9bb2fe888edab7e52a180d7f4d7fdab17392a736 crc:4fac4210
275b.u29 with 1024kb
sha1:4b71c9583fe3b16a24f05d685d1edbd53ff81f81 crc:85af508e
276b.u28 with 1024kb
sha1:bb5113d3e0a4ca81e055da9c03755d0e6270d927 crc:e305843a
277b.u27 with 1024kb
sha1:8cfeff5ca7d29d973409df7f422428411462eab6 crc:b6b4221e
278b.u26 with 1024kb
sha1:023227d314ec91c9b508b7fd60f163414165c25b crc:74d42250
279b.u8 with 1024kb
sha1:ac8cfca1b334d95e209bcfceeeeca31c03faecc8 crc:8d30a3e0
280b.u7 with 1024kb
sha1:dbc682b5770755fed8c04ef0f0311b2850228236 crc:b5ee60ec
281b.u6 with 1024kb
sha1:e8c8b263ffe53d5af50a561d038bfa96136767ad crc:21a6d4f2
282b.u5 with 1024kb
sha1:f99af42ec24938cdd19c0ff7ac2b9e9882dc3655 crc:07d54f8a
283b.u4 with 1024kb
sha1:45e08c533acc538d88a0580535325b9ff1a60f2f crc:bdbe7ec1
284b.u3 with 1024kb
sha1:7f708ce49f34582d53abad0d811265dd28af899f crc:ae9e9f16
285b.u2 with 1024kb
sha1:1f70027ad3b781244b672ee77225e32589c61e46 crc:8dc3ec34
286b.u1 with 1024kb
sha1:a74881acf222466deb9c9e35dff532af6b10a7fc crc:4bab9ba2
316-0206.u14 with 32kb
sha1:7cff2741866095ff42eadd8022bea349ec8d2f39 crc:9617d796
316-0287.u49 with 32kb
sha1:85ea0915f23571358e2e0c2b66b968e7b93f4bd6 crc:d4374b01
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

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Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Invinco & Head On 2 (c) 1980 Sega.

Head On 2 is a 2-D maze racing game. You control your car through the maze to pick up the dots while at the same time avoiding the car, or cars, that are constantly trying to ram you. Successfully get through one maze and many more await you. This is good practice for freeway driving in the big city.

Invinco is a game inspired by "Space Invaders" with some innovation on the aliens : One row blinks in and out of view, another row's aliens roll so as to make themselves harder or easier to hit, and a 3rd row of aliens each take (at least) 3 hits to kill. A 4th row has aliens that turn into bombs, blowing up everything around them to make your job somewhat easier.


Game ID : 271-286

Main CPU : Zilog Z80 (@ 1.93356 Mhz)
Sound Chips : Discrete circuitry

Players : 2
Control : 4-way joystick
Buttons : 2


Released in March 1980.


For Head On 2 :
Dots : 5 points X number of cars on field.
Diamonds : 25 points X number of cars on field.

For Invinco :
Bottom Blue Aliens : 100 points
White aliens : 200 points
Yellow aliens : 300 points
Light Blue Aliens : 400 points
Top Blue Aliens : 800 points
UFOs : 1,000 - 2,000 points


For Head On 2 :

* Always be aware of where the Jam Car(s) is/are located. They can only make one lane change at a time but that lane change may be into your lane.

* The faster you go, the fewer lanes you can cross. At full acceleration, you will only be able to change one lane at a time. In the earlier levels, this will be fine since you will only be dealing with one car. In the multiple Jam Car levels, this can be a very bad thing. Decelerate (take your finger off the accelerate button) to go across multiple lanes.

* The Jam Car(s) always travel in a clockwise motion while you travel in a counterclockwise motion. Remember that so that you don't get confused when there are multiple cars in the maze. Also, the color of the Jam Car is red while yours is white.

* Don't try to get all the dots on one of the lanes. You need to anticipate where your next move is well before you enter the lane change area since you cannot change lanes at any other time. Sometimes, on the earlier levels, it is best to do a staggered type dot pickup where you do lane one, change to lane two, to lane three, lane four, lane five, then back to lane one. If you time it right, the Jam Car or Cars will still be in the maze.

* Don't let the speed of the Jam Car(s) throw you. Just plan to be out of your lane and in the lane change area before them. If both cars enter at the same time, you run a big risk of a collision.

For Invinco :

* Time your shots when aiming at certain targets. The white aliens turn invisible on you, so try to hit them when they're visible on the screen. Also, there's a period of time that the top aliens are invulnerable to your shots while they change to another form; wait a second or so before shooting them again so you don't waste shots and time.


Edit this entry: http://www.arcade-history.com/?&page=detail&id=1199&o=2

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
60000000 0000 00000000 00000000 Invinco
60000000 0000 00000000 00000000 ---------
00000000 E3DA 00000009 FFFFFFFF Infinite Lives PL1
00000000 E411 00000009 FFFFFFFF Infinite Lives PL2
60000000 0000 00000000 00000000
60000000 0000 00000000 00000000 Head On
60000000 0000 00000000 00000000 ---------
00000000 E3D9 00000006 FFFFFFFF Infinite Lives PL1
00000000 E3DA 00000006 FFFFFFFF Infinite Lives PL2

Credit Pugsy's MAME Cheat file