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{{about2|the 1988 arcade version|the 1999-2000 arcade and Dreamcast version|Sega Tetris}}
{{Infobox |title = Tetris
{{Infobox |title = Tetris
|developer = [[Sega]]
|developer = [[Sega]]
|publisher = [[Sega]]
|publisher = [[Sega]]
|released = December 20, 1988
|released = December 1988
|platform = Sega System 16B<br>Sega System 16A<br>Sega System E<br>Taito H System<br>Taito B System
|platform = Sega System 16B<br>Sega System 16A<br>Sega System E<br>Taito H System<br>Taito B System
|boxart = Tetris_(Sega)_flyer.jpg
|boxart = Tetris_(Sega)_flyer.jpg
|title-scrn = SegaTetrisTitle.png
|title-scrn = SegaTetrisTitle.png
|ingame-scrn = SegaTetrisGameplay3.png
|ingame-scrn = SegaTetrisGameplay1.png
|preview = 1
|preview = 1
|playfield = 10 &times; 20
|playfield = 10 &times; 20
Line 13: Line 15:
|system = [[Sega Rotation]] (no [[wall kick]]s)
|system = [[Sega Rotation]] (no [[wall kick]]s)
}}
}}
{{about2|the 1988 arcade version|the 1999-2000 arcade and Dreamcast version|Sega Tetris}}


'''''Tetris''''' is an arcade game published by [[Sega]] in [[1988 in Tetris|1988]]. It took Japanese arcades by storm, and is one of the most commonly known versions of the game. Due to its popularity, it became the base of rules for many other Japanese games created later on, both licensed and unlicensed. Such games include the [[TGM series|''TGM'' series]], ''[[Tetris Plus]]'' series, ''[[Tetris S]]'' and ''[[ТЕТРИС SEMIPRO-68k|Shimizu Tetris]]''. It was one of the first games to have [[lock delay]], greatly improving maneuverability at high speeds.
'''''Tetris''''' is an arcade game published by [[Sega]] in [[1988 in Tetris|1988]]. It took Japanese arcades by storm, and is one of the most commonly known versions of the game. Due to its popularity, it became the base of rules for many other Japanese games created later on, both licensed and unlicensed. Such games include the [[TGM series|''TGM'' series]], ''[[Tetris Plus]]'' series, ''[[Tetris S]]'' and ''[[ТЕТРИС SEMIPRO-68k|Shimizu Tetris]]''. It was one of the first games to have [[lock delay]], greatly improving maneuverability at high speeds.


==Gameplay==
== Gameplay ==
[[Image:Japanese_Man_Playing_Tetris.jpg|300px|thumb|right|Japanese man playing ''Tetris'' (Sega)]]
Sega's version of ''Tetris'' is an endless game with the only goal being to score points. As the player progresses, the levels increase thereby changing the game speed. Highly skilled players can play indefinitely, even when the score [[maxout|counter stops]] at 999,999 points, though players usually stop once this is achieved.
Sega's version of ''Tetris'' is an endless game with the only goal being to score points. As the player progresses, the levels increase thereby changing the game speed. Highly skilled players can play indefinitely, even when the score counter stops at 999,999 points, though players usually stop once this is achieved.


Being an early game, released just one year after [[Elorg]] licensed ''Tetris'' to publishers, [[tetromino]]es can only be rotated counterclockwise. Unlike these games however, this version has 3 buttons which can be tapped quickly in a piano-like motion, equivalent to a clockwise rotation.
Being an early game, released just one year after [[Elorg]] licensed ''Tetris'' to publishers, [[tetromino]]es can only be rotated counterclockwise. Unlike these games however, this version has 3 buttons which can be tapped quickly in a piano-like motion, equivalent to a clockwise rotation.
Line 27: Line 27:
A game design element not commonly seen in recent games is the existence of a [[ceiling]]. The [[playfield]] height is 20 rows, and any rotation that would exceed that height will fail. At high gravity speeds, players must time their piece rotations so the piece is not touching the ceiling, and also not stuck in the stack.
A game design element not commonly seen in recent games is the existence of a [[ceiling]]. The [[playfield]] height is 20 rows, and any rotation that would exceed that height will fail. At high gravity speeds, players must time their piece rotations so the piece is not touching the ceiling, and also not stuck in the stack.


==Power-on Pattern==
=== Gameplay details ===
{{main|Power-on pattern}}
One characteristic of this version of ''Tetris'' was the existence of a Power-on pattern. This referred to the game's behavior that the string of pieces it dealt in the very first game after starting up the system was always the same. This was most probably caused by the state of the randomization seed in the system. After its discovery, players began constructing gameplay plans around the power-on pattern in order to max out the score in the least lines possible. ''[[Sega Tetris]]'' (1999, Arcade, Dreamcast) pays tribute to the power-on pattern, by dealing the sequence in the final level of the single-player game. ''[[Tetris S]]'' also contains the pattern.
 
For MAME players, unless you are playing the bootleg, you must delete your NVRAM before playing to get the power-on pattern.  The B-system version has a different power-on pattern, and does not require you to delete your NVRAM.  It even restores the pattern upon reset, which not even the bootleg will do. The System E version does not have a power-on pattern. <!-- check H-system -->
 
== TAS ==
A TAS for Sega's ''Tetris'' abuses lock delay and step reset to keep pieces active until the level timer expires, to level up as much as possible with the fewest lines cleared. At a higher level the points awarded from line clears is greater, thus needing fewer total lines to achieve a maxout.
 
[https://www.nicovideo.jp/watch/sm10007315 (TAS) Sega Tetris maxout in 98 lines]
 
== Development of Taito H System version ==
{{Expand section}}
 
==Details==
* [[Drop#Soft drop|Soft drop]]: 1G
* [[Drop#Soft drop|Soft drop]]: 1G
* [[Lock delay]]: 30 frames
* [[Lock delay]]: 30 frames
Line 134: Line 120:
* Current piece fall speed is located at <code>C7000Ah</code> in the RAM.
* Current piece fall speed is located at <code>C7000Ah</code> in the RAM.
* Current level timer is located at <code>C72336h</code> (word) in RAM in System 16A version; <code>FFE336h</code> in System 16B version. This table is located at <code>3D28</code> in the 68k portion of an unshuffled ROM for System 16B version.
* Current level timer is located at <code>C72336h</code> (word) in RAM in System 16A version; <code>FFE336h</code> in System 16B version. This table is located at <code>3D28</code> in the 68k portion of an unshuffled ROM for System 16B version.
==Power-on Pattern==
{{main|Power-on pattern}}
One characteristic of this version of ''Tetris'' was the existence of a Power-on pattern. This referred to the game's behavior that the string of pieces it dealt in the very first game after starting up the system was always the same. This was most probably caused by the state of the randomization seed in the system. After its discovery, players began constructing gameplay plans around the power-on pattern in order to max out the score in the least lines possible. ''[[Sega Tetris]]'' (1999, Arcade, Dreamcast) pays tribute to the power-on pattern, by dealing the sequence in the final level of the single-player game. ''[[Tetris S]]'' also contains the pattern.
For MAME players, unless you are playing the bootleg, you must delete your NVRAM before playing to get the power-on pattern.  The B-system version has a different power-on pattern, and does not require you to delete your NVRAM.  It even restores the pattern upon reset, which not even the bootleg will do. The System E version does not have a power-on pattern. <!-- check H-system -->
== Development ==
=== Taito versions ===
Because of the popularity of Tetris in Japan at the time, Taito repurposed some of there less popular games with a Tetris port. These boards were found in Taito's arcade locations.
Tree versions were made:
* B-System (YM-2203): ''Master of Weapon'' conversion
* B-System (YM-2610): ''Rastan Saga II'' conversion
* H-System: ''Go for the Gold'' conversion
The person responsible for porting the game to the H-System leaked to 2ch that he had released cheat codes within the game.
== Legacy ==
[[Image:Japanese_Man_Playing_Tetris.jpg|200px|thumb|right|Japanese man playing ''Tetris'' (Sega)]]
This game remains to this day significant in Japan and other eastern Asian countries. Its gameplay, music, and many of the aesthetics were adapted in ''[[Tetris S]]'' and ''[[Sega Tetris]]''. It has influenced many other Tetris games developed in Japan, including ''[[Tetris Plus]]'', and the [[TGM series]].
The game was re-released as part of Sega's [[Sega_Ages_2500_Series_Vol.28_Tetris_Collection|Tetris Collection]] for the PlayStation 2, along with other early Sega Tetris titles. The Mega Drive Mini also includes a port of this game with a few more options, instead of the unreleased [[Tetris (Mega Drive)|Mega Drive version]].
=== TAS ===
A TAS for Sega's ''Tetris'' abuses lock delay and step reset to keep pieces active until the level timer expires, to level up as much as possible with the fewest lines cleared. At a higher level the points awarded from line clears is greater, thus needing fewer total lines to achieve a maxout. [https://www.nicovideo.jp/watch/sm10007315 (TAS) Sega Tetris maxout in 98 lines]
<br clear="all">
== Physical scans ==
{{Scanbox
|console = Sega System 16B
|region = JP
|pcb = Tetris (Sega) System 16B arcade PCB.jpg
|dimensions = 300&times;290&times;38 mm
}}


==See also==
==See also==
Line 140: Line 161:


{{Sega games}}
{{Sega games}}
[[Category:Games List]]
[[Category:Official Tetris games]]
[[Category:Arcade games]]

Revision as of 00:04, 18 October 2020

This article is about the 1988 arcade version. For the 1999-2000 arcade and Dreamcast version, see Sega Tetris.
Tetris
Tetris (Sega) flyer.jpg
Developer(s)Sega
Publisher(s)Sega
Platform(s)Sega System 16B
Sega System 16A
Sega System E
Taito H System
Taito B System
ReleaseDecember 1988
Gameplay info
Next pieces1
Playfield size10 × 20
Hold pieceNo
Hard dropNo
Rotation systemSega Rotation (no wall kicks)
SegaTetrisTitle.png
SegaTetrisGameplay1.png

Tetris is an arcade game published by Sega in 1988. It took Japanese arcades by storm, and is one of the most commonly known versions of the game. Due to its popularity, it became the base of rules for many other Japanese games created later on, both licensed and unlicensed. Such games include the TGM series, Tetris Plus series, Tetris S and Shimizu Tetris. It was one of the first games to have lock delay, greatly improving maneuverability at high speeds.

Gameplay

Sega's version of Tetris is an endless game with the only goal being to score points. As the player progresses, the levels increase thereby changing the game speed. Highly skilled players can play indefinitely, even when the score counter stops at 999,999 points, though players usually stop once this is achieved.

Being an early game, released just one year after Elorg licensed Tetris to publishers, tetrominoes can only be rotated counterclockwise. Unlike these games however, this version has 3 buttons which can be tapped quickly in a piano-like motion, equivalent to a clockwise rotation.

It did not implement wall kicks or hard drop. However, many of the mechanics that exist in later games were first seen in this version, such as 1G DAS movement, lock delay, ARE, and rotation/movement processed before gravity—allowing for synchro moves to be performed at 1G fall speed.

A game design element not commonly seen in recent games is the existence of a ceiling. The playfield height is 20 rows, and any rotation that would exceed that height will fail. At high gravity speeds, players must time their piece rotations so the piece is not touching the ceiling, and also not stuck in the stack.

Gameplay details

Speed Levels

There are four difficulties which affect the speed, easy, normal, hard and hardest. The game difficulty can be configured through the DIP switch on the arcade board.

Graph of gravity timings per level
Fall speed table; frames per cell
Level Easy Normal Hard Hardest
0 48 48 40 30
1 32 24 20 15
2 24 18 16 12
3 18 15 12 10
4 14 12 10 8
5 12 10 8 6
6 10 8 6 4
7 8 6 4 2
8 6 4 2 1
9 4 2 1 1
10 12 10 10 8
11 10 8 8 6
12 8 6 6 4
13 6 4 4 2
14 4 2 2 1
15 2 1 1 1

Level advancement requirements

There are two ways to increase the level:

  • Clear 4 lines in any combination of line clears.
  • Place a tetromino after the "level timer" reaches a certain value. (Level will not increase if a line clear happens. [Clarification needed])

The level timer increases every frame, except when reset after line clearing and before level-up is shown.

Level timer per level
Level 0 1-8 9-10 11-14 15-99
Required time (frames) 3480 2320 3480 1740 3480
Required time (Seconds) 58 38.67 58 29 58

Level 15 value is used for levels 16 to 99.

Scoring

Level Points for
1 line
Points for
2 lines
Points for
3 lines
Points for
4 lines
Points for soft dropping pieces
0-1 100 400 900 2000 1 per line
2-3 200 800 1800 4000 2 per line
4-5 300 1200 2700 6000 3 per line
6-7 400 1600 3600 8000 4 per line
8+ 500 2000 4500 10000 5 per line

If a line clear is also a Perfect Clear, a 10x multiplier is applied to the awarded points.

Notes

  • Current piece fall speed is located at C7000Ah in the RAM.
  • Current level timer is located at C72336h (word) in RAM in System 16A version; FFE336h in System 16B version. This table is located at 3D28 in the 68k portion of an unshuffled ROM for System 16B version.

Power-on Pattern

Main article: Power-on pattern

One characteristic of this version of Tetris was the existence of a Power-on pattern. This referred to the game's behavior that the string of pieces it dealt in the very first game after starting up the system was always the same. This was most probably caused by the state of the randomization seed in the system. After its discovery, players began constructing gameplay plans around the power-on pattern in order to max out the score in the least lines possible. Sega Tetris (1999, Arcade, Dreamcast) pays tribute to the power-on pattern, by dealing the sequence in the final level of the single-player game. Tetris S also contains the pattern.

For MAME players, unless you are playing the bootleg, you must delete your NVRAM before playing to get the power-on pattern. The B-system version has a different power-on pattern, and does not require you to delete your NVRAM. It even restores the pattern upon reset, which not even the bootleg will do. The System E version does not have a power-on pattern.

Development

Taito versions

Because of the popularity of Tetris in Japan at the time, Taito repurposed some of there less popular games with a Tetris port. These boards were found in Taito's arcade locations.

Tree versions were made:

  • B-System (YM-2203): Master of Weapon conversion
  • B-System (YM-2610): Rastan Saga II conversion
  • H-System: Go for the Gold conversion

The person responsible for porting the game to the H-System leaked to 2ch that he had released cheat codes within the game.

Legacy

Japanese man playing Tetris (Sega)

This game remains to this day significant in Japan and other eastern Asian countries. Its gameplay, music, and many of the aesthetics were adapted in Tetris S and Sega Tetris. It has influenced many other Tetris games developed in Japan, including Tetris Plus, and the TGM series.

The game was re-released as part of Sega's Tetris Collection for the PlayStation 2, along with other early Sega Tetris titles. The Mega Drive Mini also includes a port of this game with a few more options, instead of the unreleased Mega Drive version.

TAS

A TAS for Sega's Tetris abuses lock delay and step reset to keep pieces active until the level timer expires, to level up as much as possible with the fewest lines cleared. At a higher level the points awarded from line clears is greater, thus needing fewer total lines to achieve a maxout. (TAS) Sega Tetris maxout in 98 lines

Physical scans

Sega System 16B, JP
Tetris (Sega) System 16B arcade PCB.jpg
PCB, 300×290×38 mm

See also