Tetris (Spectrum HoloByte)
| Tetris | |
|---|---|
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| Developer(s) | Spectrum HoloByte |
| Publisher(s) | Spectrum HoloByte |
| Platform(s) |
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| Release |
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| Gameplay info | |
| Next pieces | 1 |
| Playfield size | 10 × 20 |
| Hold piece | No |
| Hard drop | Hard only |
| Rotation system | Identical to Sega Rotation, except the vertical state of the S tetromino is shifted 1 space right |
| DOS version | |
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| Amiga version | |
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| Apple II version | |
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| Apple IIGS version | |
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| Atari ST version | |
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| Mac version | |
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Tetris is the first Tetris game developed and released by Spectrum HoloByte, and the first version to be released commercially.
There are two versions of the DOS release; the revised version has the plane on the title screen removed (at the request of Elorg) and the military-themed backgrounds replaced (at the request of Pajitnov). The other Spectrum Holobyte versions were based on the revised version.
Timing
Timing is based on video frames, which are approximately 1/70 of a second.
- Gravity makes a piece fall by one row every 20 - (level * 2) frames.
- Lock delay is 16 frames.
- Line clear delay is 20 frames.
- ARE is 2 frames.
Scoring
Placing a piece awards score according to the following formula:
- points = 4 + (2 * level) + row number of top of piece
The bottom row is number 1. If the piece was dropped manually, the position before dropping is used, so for a high score the player should drop as soon as possible.
If piece preview is enabled at the time a piece is placed, a 25% penalty is assessed: (both divisions are rounded down)
- points with preview on = floor(points / 2) + floor(points / 4)
No additional points are awarded for line clears.
Development
The DOS version was developed in 8086 assembly at the Nexa office in San Francisco, CA. The Amiga and Atari ST versions was initially assigned to John Jones-Steele, who programmed the conversions of Mirrorsoft's Tetris for the same platforms previously. However, the initial approach of auto-converting the original 8086 code to 68000 code had issues with poor performance and other bugs. As such, Nexa programmers Kevin Seghetti and Gary Poon took over the Amiga and Atari ST projects to clean them up for release.[1][2]
The Apple II and Macintosh versions handled by Spectrum HoloByte, and were written from scratch. The Macintosh version was contracted to Roland Gustafsson, who had previous experience programming his own fan game "Quadris" after playing a copy of Vadim Gerasimov's port of Tetris that was sent to Broderbund for consideration for licensing.[3][4]
See also
- Tetris Gold - A compilation release which included the DOS version.
References
External links
Tetris (Spectrum HoloByte) on StrategyWiki
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