Viper Phase 1
| Viper Phase 1 | |
|---|---|
 |
|
| Developer(s) | SEIBU KAIHATSU INC. |
| Publisher(s) |
Fabtek (US) Tuning Electronic (DE) |
| Series | Raiden |
| Release date(s) | May 1995 (Old Version) August 1995 (New Version) |
| Genre(s) | Vertically scrolling shooter |
| Mode(s) | 1-2 player simultaneous |
| Cabinet | Upright |
| Arcade system | Seibu SPI System |
| Display | Raster, 240 x 320 pixels (Vertical), 6144 colors |
Viper Phase 1 (バイパーフェイズ1 Baipā Feizu Wan?) is a 1995 scrolling shooter arcade game by Seibu Kaihatsu. It is a spin-off in the Raiden series set in space.
Viper Phase 1 runs on the Seibu SPI System hardware. The game software is stored on ROM daughterboards that are interchangeable on one SPI board. ROM daughterboards and Seibu SPI main boards are region-specific. For example, the Japanese daughterboards are not compatible with the European motherboard and vice versa.
By the year 2050, mankind begins the colonization of multiple solar systems in search for habitable planets. However, while the colonists establish original cultures and scientific studies, many of them begin feuding with each other and battles break out among them and the Earth. One rebel faction in particular rises to great power and makes Earth their primary target. Earth's response is Operation Viper Phase 1: to combat the rebels using advanced space fighters built from downed enemy ships.
The game is set in outer space. Players pilot a space fighter through eight stages of enemy space fleets and bosses. Enemies include small space fighters, space cruisers, space frigates, and entire space installations.
Gameplay is similar to the Raiden series. A bonus is assessed at the end of each stage taking into account the number of medals collected, the number of enemies destroyed, the number of bombs in stock, and the total kill percentage. At the end of the game, a grand tally is assessed. Factors taken into account are the number of continues used and the number of lives lost.
A new version of Viper Phase 1 was released with gameplay changes. The new version is known as Viper Phase 1: USA in the United States. The known differences between the versions:
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