View source for Tetris The Grand Master

{{Infobox |title = Tetris The Grand Master
|developer = [[Arika]]
|publisher = Capcom
|released = {{release|JP|August, 1998}}
|platform = Arcade
|sequel = ''[[Tetris The Absolute The Grand Master 2]]''
|title-scrn = Arika_tgm1_title.jpg
|ingame-scrn = Arika_tgm1_ingame.jpg
|preview = 1
|playfield=10 &times; 20
|boxart = TGM flyer.jpg
|caption = Arcade flyer for ''Tetris The Grand Master''
|hold = No
|hard = No
|system = [[Arika Rotation System|ARS]]
}}
'''''Tetris The Grand Master''''' is an arcade game released exclusively in Japan, and the first game of the [[TGM series|''TGM'' series]]. Players place pieces and clear lines as the game goes on, increasing their grade along the way. 

At later levels, the game will force them to keep up with the high speeds using special techniques; in addition to the Initial Rotation System introduced in the game. The game is known for being one of Arika's popular games to this day, and later installments would introduce modes with their own gameplay and objective.

== Gameplay ==

''TGM<nowiki>'</nowiki>s'' gameplay is heavily inspired by it's arcade predecessor, Sega's [[Tetris (Sega)|''Tetris'']] released 10 years earlier. It uses a [[Arika Rotation System|modified rotation system]], color scheme, and relies heavily on mechanics such as [[lock delay]]. Another game which inspired ''TGM'' is ''[[TETRIS SEMIPRO-68k]]'', a fan game which was the first to introduce 20G gravity.

The main goal in ''TGM'' is to score points, awarding the player a higher grade. The game ends when a player reaches level 999. If the player scored enough points, they will be awarded with the grade S9. To achieve the grade GM, the player must also meet some time requirements during play. If the player [[top out|tops out]] before reaching level 999, the game ends, awarding the player the current grade and it's "mastering time", the time at which the grade was awarded during gameplay.

===Level===
Level has a unique implementation in ''TGM''. The level counter will increase by 1 for every piece that enters the playfield. It will also increase by 1 for each line cleared.

When the player is about to increment the hundreds digit (e.g., level 399), only line clears will increase the level. Level 998 is treated similarly, with a final line clear required to reach 999 and finish.

===IRS===
{{main|IRS}}
Abbreviation for Initial Rotation System.

Normally a piece will appear in the rotation showed in the [[piece preview]]. With IRS, holding either the left or right rotation button will cause the piece to appear rotated 90 degrees. This allows the player a higher degree of freedom when placing pieces at higher game speeds.

===TLS===
{{main|ghost piece}}
Abbreviation for Temporary Landing System
This system is a semi-transparent representation of where the piece will land if allowed to drop into the playfield. It is displayed up to level 100.

== Scoring ==
''The Grand Master'' shares the same scoring mechanisms of many other Tetris games:
* The player receive more points for clearing more lines at once.
* Lines are worth more with each passing level.
* The player receive points for forcing a piece down. (Although only when this results in cleared lines, unlike in some other games.)
* The player receive a [[combo]] bonus for clearing lines with consecutive pieces.
* The player receive a bravo bonus for clearing the entire playfield.

===Scoring formula===
: <math>\text {Combo} = \text {Previous Combo Value} + (2 \times \text {Lines}) - 2</math>
: <math>\text {Score} = (\left \lceil (\text {Level} + \text {Lines})/4 \right \rceil + \text {Soft}) \times \text {Lines} \times \text {Combo} \times \text {Bravo}</math>

Where:
*Level is the current level the player is on (before the lines are cleared).
*Lines is the number of lines the player just cleared.
*<math>\left \lceil (\text {Level} + \text {Lines})/4 \right \rceil</math> is rounded up.
*Soft is the cumulative number of frames during which Down was held during the piece's active time. Manually locking pieces already on the ground will increase Soft by 1.
*Locking a piece without clearing lines resets Combo to 1. Otherwise, the game updates Combo as follows, ''before'' calculating Score:
*:E.g., a double-triple-single combo will have combo values 3, 7, and 7 respectively.
*Bravo is equal to 4 if this piece has cleared the screen, and otherwise is 1.

== Grading ==
In ''TGM'' grade is entirely determined by score. As the player passes certain milestones, the game will assign the player the next grade.
{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Grade Conditions'''
! bgcolor="#66BB55"|Grade || bgcolor="#BBBBBB"|Required Score || bgcolor="#66BB55"|Grade || bgcolor="#BBBBBB"|Required Score
|- align="center"
| bgcolor="#D7ECC6"| 9 ||      0 || bgcolor="#D7ECC6"| S1 ||  16,000
|- align="center"
| bgcolor="#D7ECC6"| 8 ||    400 || bgcolor="#D7ECC6"| S2 ||  22,000
|- align="center"
| bgcolor="#D7ECC6"| 7 ||    800 || bgcolor="#D7ECC6"| S3 ||  30,000
|- align="center"
| bgcolor="#D7ECC6"| 6 ||  1,400 || bgcolor="#D7ECC6"| S4 ||  40,000
|- align="center"
| bgcolor="#D7ECC6"| 5 ||  2,000 || bgcolor="#D7ECC6"| S5 ||  52,000
|- align="center"
| bgcolor="#D7ECC6"| 4 ||  3,500 || bgcolor="#D7ECC6"| S6 ||  66,000
|- align="center"
| bgcolor="#D7ECC6"| 3 ||  5,500 || bgcolor="#D7ECC6"| S7 ||  82,000
|- align="center"
| bgcolor="#D7ECC6"| 2 ||  8,000 || bgcolor="#D7ECC6"| S8 || 100,000
|- align="center"
| bgcolor="#D7ECC6"| 1 || 12,000 || bgcolor="#D7ECC6"| S9 || 120,000
|}
{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''GM Grade Conditions'''
|-
! bgcolor="#80A3F8"|Level || colspan="1" colspan="1" bgcolor="#BBBBBB"|Required Score || colspan="1" bgcolor="#66BB55"|Time
|- align="center"
| bgcolor="#C4E8E8"| 300 || 12,000 (Grade 1)|| bgcolor="#D7ECC6"| =<04:15:00
|- align="center"
| bgcolor="#C4E8E8"| 500 || 40,000 (Grade S4)|| bgcolor="#D7ECC6"| =<07:30:00
|- align="center"
| bgcolor="#C4E8E8"| 999 || 126,000 <br/>(slightly higher than S9) || bgcolor="#D7ECC6"| =<13:30:00
|}

===Secret grade===
{{main|Secret Grade Techniques}}
Secret grade is a hidden grading system that recognizes a ">" pattern in the [[playfield]] by leaving holes. The first hole becomes Secret grade 9, and each subsequent hole increasing the grade until row 19, the GM grade. The player must top out to have the Secret grade awarded. A minimum grade of 5 is needed to see the message.

==Vs. Mode==
If the arcade operator has enabled Vs. mode, two players can start a Vs. game. One player must first start a game, and during any point of that game the second player may press start to challenge them, and begin a game.

When the player clears 2 or more lines at once, those lines will be sent to their opponent's playfield as [[garbage]] lines. If the match does not end within 5 minutes, the game ends in a draw.

===Item blocks===
Item blocks can be used to attack or defend from the player's opponent.

Clearing lines will fill up the item meter adjacent to a player's playfield. When the meter is full an item block is dealt to the player. They may use it by clearing a line which the piece is part of.

There are 18 different item blocks.

{| class="wikitable"
|+
! style="background-color: #ffd3ac;" colspan="2" | Attack items
|-
|DEATH BLOCK
|Makes the opponent's next block big.
|-
|NEGA FIELD
|Flip the playfield's occupied cells to empty, and empty cells to occupied.
|-
|SPIN FIELD
|Rotate the opponent's field for a short time.
|-
|180° FIELD
|Rotate the playfield upside down and move the newly rotated cells down.
|-
|SHOT GUN!
|Randomly shoot a group of holes in the opponent's stack.
|-
|HARD BLOCK
|The opponent's next piece must be cleared twice to be removed from the playfield.
|-
|LASER BLOCK
|Remove a column of holes in the opponent's stack. The attacker many move the laser by pressing left and right.
|-
|ROLL ROLL
|The opponent's next 3 pieces are auto rotating by a fixed interval.
|-
|TRANS FORM
|The opponent's next 3 pieces will change [[tetromino]] every time the piece is rotated.
|-
|X-RAY
|A partially invisible effect is applied to the opponent's stack for a short period.
|-
|PRESS FIELD
|Shrinks the opponent's playfield for a short period.
|-
! style="background-color: #c4e8e8;" colspan="2" | Defense items
|-
|↑ DEL FIELD
|Deletes the upper half of the player's playfield.
|-
|↓ DEL FIELD
|Deletes the lower half of the player's playfield.
|-
|→ MOV FIELD
|Push every cell in the player's playfield to the right.
|-
|← MOV FIELD
|Push every cell in the player's playfield to the left.
|-
|DEL EVEN
|Deletes every 2nd row in the player's playfield.
|-
! style="background-color: #d7ecc6;" colspan="2" | Special items
|-
|FREE FALL
|Forces all cells to move down in the player's playfield removing any holes.
|-
|EXCHG FIELD
|Swaps the player's and opponent's playfield.
|-
|}

==Hidden modes==
All codes must be entered at the title screen. Codes may be combined (i.e. Big 20G mode + Reverse Monochrome mode.) Scores achieved using codes will not be stored on the high score table.

Key: L = Left, D = Down, U = Up, R = Right

{|
|
{|
|[[Image:TGM_20G_mode.gif|thumb|100px|none|20G mode]]
|'''20G Mode'''
Immediately enables maximum gravity (20G).<br>
Input code: <code>DDDDDDDDCBA</code>
|}
|
{|
|[[Image:TGM_big_mode.gif|thumb|100px|none|Big mode]]
|'''Big Mode'''
Tetrominoes are twice normal size, simulating play in a 5x10 playfield<br>
Input code: <code>LLLLDCBA</code>
|}
|-
|
{|
|[[Image:TGM_rev_mode.gif|thumb|100px|none|Rev mode]]
|'''Rev Mode'''
Play in reverse! Pieces will spawn at the bottom of the playfied and "fall" upwards<br>
Input code: <code>DUUDCBA</code>
|}
|
{|
|[[Image:TGM_mono_mode.gif|thumb|100px|none|Mono mode]]
|'''Mono Mode'''
All tetrominoes are monochrome<br>
Input code: <code>RRRUCBA</code>
|}
|-
|
{|
|[[Image:TGM_TLS_mode.gif|thumb|100px|none|TLS mode]]
|'''TLS Mode'''
Shows the "Temporary Landing System" aka "ghost piece" for the entirety of the game, not just 0-100<br>
Input code: <code>ABCCBAACB</code>
|}
|
{|
|[[Image:TGM_uki_mode.gif|thumb|150px|none|Uki mode]]
|'''Uki Mode'''
Instead of line clear sound effect when clearing multiple lines, a child's voice will say "Uki" repeatedly, the japanese word for the sound a monkey makes. The child will say "Waaahhh!" instead if the player scores a Tetris.<br>
Input code: <code>ABABABABABABABABB</code>
|}
|}

=== Other modes ===

*'''No item VS''' (Play VS mode without item blocks): <br>Hold both player Start buttons together before the match begins.

== Speed timings==
[[drop|Gravity]] does not increase uniformly, unlike many other tetris games. It rises and falls, depending on the level as shown in the table below.

The unit for [[gravity]] is [[Glossary#G|G]] (rows per frame), as a [http://en.wikipedia.org/wiki/Fixed-point_arithmetic fraction with a constant denominator] of 256. This means '''G = Internal Gravity/256'''. For example, at levels 90 through 99, the gravity is 64/256G, or 1/4G.

{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Internal Gravity'''
!bgcolor="#80A3F8"|Level||bgcolor="#BBBBBB"|Internal Gravity<br>(1/256 G)||bgcolor="#80A3F8"|Level||bgcolor="#BBBBBB"|Internal Gravity<br>(1/256 G)
|-align = center
|bgcolor="#C4E8E8"|0||4||bgcolor="#C4E8E8"|220|||32
|-align = center
|bgcolor="#C4E8E8"|30||6||bgcolor="#C4E8E8"|230||64
|-align = center
|bgcolor="#C4E8E8"|35||8||bgcolor="#C4E8E8"|233||96
|-align = center
|bgcolor="#C4E8E8"|40||10||bgcolor="#C4E8E8"|236||128
|-align = center
|bgcolor="#C4E8E8"|50||12||bgcolor="#C4E8E8"|239||160
|-align = center
|bgcolor="#C4E8E8"|60||16||bgcolor="#C4E8E8"|243||192
|-align = center
|bgcolor="#C4E8E8"|70||32||bgcolor="#C4E8E8"|247||224
|-align = center
|bgcolor="#C4E8E8"|80||48||bgcolor="#C4E8E8"|251||256 (1G)
|-align = center
|bgcolor="#C4E8E8"|90||64||bgcolor="#C4E8E8"|300||512 (2G)
|-align = center
|bgcolor="#C4E8E8"|100||80||bgcolor="#C4E8E8"|330||768 (3G)
|-align = center
|bgcolor="#C4E8E8"|120||96||bgcolor="#C4E8E8"|360||1024 (4G)
|-align = center
|bgcolor="#C4E8E8"|140||112||bgcolor="#C4E8E8"|400||1280 (5G)
|-align = center
|bgcolor="#C4E8E8"|160||128||bgcolor="#C4E8E8"|420||1024 (4G)
|-align = center
|bgcolor="#C4E8E8"|170||144||bgcolor="#C4E8E8"|450||768 (3G)
|-align = center
|bgcolor="#C4E8E8"|200||4||bgcolor="#C4E8E8"|500||5120 (20G)
|}

Unlike ''[[TGM2]]'', the [[Line_clear#delay|line clear delay]], [[lock delay]], [[ARE]] and [[DAS]] do not change throughout the game. The following are the timing values adjusted to what a player would observe, including inclusive DAS counting.
{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Delays'''
! bgcolor="#80A3F8"|Level
! bgcolor="#FFA069"|[[ARE]]<br>(frames)
! bgcolor="#FFFF55"|[[DAS]]<br>(frames)
! bgcolor="#CC88FF"|[[Lock delay|Lock]]<br>(frames)
! bgcolor="#66BB55"|[[Line clear]]<br>(frames)
|- align = center
| bgcolor="#C4E8E8"|000 - 999 || bgcolor="#FFD3AC"|30 || bgcolor="#FFFF88"|16 || bgcolor="#CCBBFF"|30 || bgcolor="#D7ECC6"|41
|}
*The player's DAS charge is unmodified during line clear delay, the first 4 frames of ARE, the last frame of ARE, and the frame on which a piece spawns.

== Emulation ==

If you want to emulate this game legally, meaning you have already purchased and currently own a PCB of Tetris the Grand Master, you can use this list of verified files and archives to make sure you can emulate this game properly. There aren't any guides, at this point, for dumping the required files from your own PCB; you will need to search out the required files and archives yourself. We do not share files on this Wiki or the official Discords, so please do not ask us for them. Please use an MD5 checker to make sure your hash matches the one in this list.

{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Downloadable Archives'''
!bgcolor="#80A3F8"|Archive||bgcolor="#BBBBBB"|MD5 Hash
|-align = center
|bgcolor="#C4E8E8"|tgmj.zip||7fcc8a72b4bc1f3340e1db4724b0628d
|-align = center
|bgcolor="#C4E8E8"|coh3002c.zip||4f97958fe67444637b5c6700fb62849c
|-align = center
|bgcolor="#C4E8E8"|cpzn2.zip||99304c05983b337217ab4b56400a14ac
|-align = center
|bgcolor="#C4E8E8"|qsound_hle.zip||758388893761ea3ff0d820f60344a38e
|}

{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Required BIOS Files'''
!bgcolor="#80A3F8"|File||bgcolor="#BBBBBB"|MD5 Hash
|-align = center
|bgcolor="#C4E8E8"|cp10.ic652||26574f621b61ea09eef08e8a7eba5a65
|-align = center
|bgcolor="#C4E8E8"|m534002c-59.ic353||1254b215f64aee1f83895e0213a9ac82
|-align = center
|bgcolor="#C4E8E8"|coh-3002c.353||1254b215f64aee1f83895e0213a9ac82
|-align = center
|bgcolor="#C4E8E8"|dl-1425.bin||108b113a596e800a02fece73f784eeb0
|}

{| border="2" cellpadding="2" cellspacing="0" style="margin-top:1em; margin-bottom:1em; background:#f9f9f9; border:3px #999999 solid; border-collapse:collapse;"
|+'''Required TGM Files'''
!bgcolor="#80A3F8"|File||bgcolor="#BBBBBB"|MD5 Hash
|-align = center
|bgcolor="#C4E8E8"|ate_02.2e||591fe13727496e4037e53cc834e24ccd
|-align = center
|bgcolor="#C4E8E8"|ate-01m.3a||b832063bef8d81ff6a318f39da6f4c74
|-align = center
|bgcolor="#C4E8E8"|ate-05m.3h||99740df1cf1201a4efe5d5b2c4806425
|-align = center
|bgcolor="#C4E8E8"|ate-06m.4h||2188d3a9be4769a21e44d33cbfbd2024
|-align = center
|bgcolor="#C4E8E8"|atej_04.2h||14e13f937163b6db734d3220a017bfc0
|-align = center
|bgcolor="#C4E8E8"|cp11||439f9c44559f2f4761d433dd4b96866d
|}

The current version of MAME is capable of running Tetris the Grand Master. MAME can either be run as a standalone program on Windows or the Macintosh, or as a core through other Emulator frontends such as RetroArch or OpenEmu (Experimental). It is recommended that you add all of the BIOS files from the above archives into the "tgmj.zip" archive, or you may have trouble getting the game to be recognized and started correctly by the emulator. If you only import the tgmj.zip archive without the BIOS files inside, you will encounter numerous file requirement errors, or the game will simply not start.

== Physical scans ==
{{Scanbox
|console = Capcom Sony ZN-2
|region = JP
|pcb = Tetris_The_Grand_Master_arcade_PCB.jpg
|dimensions = 244&times;245&times;50 mm
}}

== Names in other languages ==
{{foreign names
|Jap=テトリス ザ・グランドマスター
|JapR=Tetorisu Za Gurando Masutā
|JapM=Tetris The Grand Master
}}

==External links==
* [https://tcrf.net/Tetris:_The_Grand_Master ''Tetris: The Grand Master'' on The Cutting Room Floor]

{{Arika games}}

[[Category:Official Tetris games]]
[[Category:Arcade games]]
[[Category:Arcade-only games]]