[[caption-width-right:367:A screenshot would do the game speeds injustice. Just look up videos for an idea of how intense it gets.]]
-> ''[[CatchPhrase Ready, go!]]''

Thought you were awesome at ''VideoGame/{{Tetris}}''? Guess again.

'''Tetris: The Grand Master''' is a series of [[NintendoHard challenging]] ''Tetris'' games developed by Arika, intended for advanced players.

The ''TGM'' series plays a bit similar to usual ''Tetris'' games (specifically, {{Sega}}'s versions of the game). However, there are a few mechanics that alter the game dramatically. Leveling up, for instance, is no longer just done through clearing lines; instead, ''every piece you drop'' will raise the level counter by one, as well as clearing lines (one per line clear). However, level numbers also take on a different meaning: the game speeds up only at particular levels, rather than with every level. The level stops going up at level ''n''+99, where ''n'' is a multiple of 100; at that point you must clear a line to level up.

At level 500, the game's drop speed maxes out and pieces drop ''instantly'' in what is known as "20G"[[note]]20 grid cells per frame (1/60th of a second). The playing field is 20 blocks high. Do the math.[[/note]] speed, forcing you to slide pieces along the stack (or ground) into place. And in newer games, some of the game's finer details are adjusted to [[UpToEleven make the game harder]]. 20G went on to be featured in other, more mainstream ''Tetris'' games, such as ''Tetris DS'', but most of those games had a mechanic known as "infinite rotation", so in practice, the drop was instant but the lock could be delayed indefinitely for each piece; this is not the case in ''TGM''. In speed-ups after 20G, the time that the pieces take to lock decreases. The game ends at level 999.

Another major mechanic is the grade system. Instead of being ranked by score, you are given a grade, typically starting at 9 and going down to 1, followed by S1 through S9, followed by the titular Grand Master rank (or filler grades between S9 and GM, depending on the game). In the original ''TGM'', ScoringPoints will raise the grade, but newer installments use more complex mechanics to increment one's grade.

The series spans multiple games:
* ''Tetris: The Grand Master'' (Arcade, 1998; aka [=TGM1=]) -- The first game in the series. The easiest in the series (both to complete and to achieve Grand Master rank), though that isn't saying much.
* ''Tetris: The Absolute - The Grand Master 2'' (Arcade, 2000; aka [=TGM2=]) -- An update to the original. Offers two modes: Normal (in which you play for points to level 300), and Master (which has a tougher grading system than [=TGM1=] and continues increasing in difficulty after level 500).
** ''Tetris: The Absolute - The Grand Master 2 PLUS'' (Arcade, 2000; aka [=TGM2+=] or TAP) -- An upgrade to [=TGM2=] that adds two new modes: TGM+ (in which garbage rises from the bottom at intervals), and the infamous T.A. Death mode (in which 20G kicks in ''as soon as the game starts.'' [[http://www.youtube.com/watch?v=J_YqwAzbWRE Here's]] the infamous video that introduced many Westerners to TGM.) TAP was going to be ported to the {{PlayStation 2}}, but legal issues with TAP's emulation in MAME caused Arika to not publish it.
** ''Tetris with Manga/CardcaptorSakura - Eternal Heart'' (PlayStation, 2000; aka [=EH=]) -- A console-exclusive LicensedGame that uses the rotation system of [=TGM2=]. Rather than play Tetris for a grade at high speed, the emphasis is clearing seven jeweled blocks in a Tetris board as quickly as possible (at minimal speeds) over a number of stages, similar to the Sega-produced Tetris derivative ''Flash Point''. A combined time limit for all stages is imposed in the story mode. This mode of play has been carried over into ''Tetris: The Grand Master 3'' as Sakura mode (with SerialNumbersFiledOff, obviously).
* ''Tetris: The Grand Master 3 - Terror-Instinct'' (Arcade, 2005; aka [=TGM3=] or Ti) -- Makes a few changes to the series' signature rotation system and incorporates the Super Rotation System (the rotation system used in "guideline" ''Tetris'' games). Revises the Master mode grade system and implements a "qualified grade" system that indicates your (roughly) average performance, similar to those of martial arts classes. T.A. Death has been replaced by Shirase mode, which has faster speeds and goes up to level 1,300 instead of 999. For those who aren't too bright at TGM, there's Easy mode, which has a slower speed curve and a special scoring system, as well as Sakura mode, which is based on the "target block"-clearing system from ''Tetris with Manga/CardcaptorSakura: Eternal Heart''. This is also the game on which the infamous [[http://www.youtube.com/watch?v=jwC544Z37qo "Invisible Tetris"]] video was recorded.
* ''Tetris: The Grand Master ACE'' ({{Xbox 360}}, 2006; aka TGMA or simply ACE) -- The only console release of ''TGM'' thus far. (A port of TAP for the [=PS2=] had been previously in the works but was scrapped.) Due to ExecutiveMeddling on The Tetris Company's and Microsoft's parts, ''ACE''[='=]s gameplay deviates strongly from other ''TGM'' games.
* ''Tetris: The Grand Master 4 - The Masters of Round'' (Arcade, canceled; aka [=TGM4=] or (T)[=MoR=]) -- The latest game in the ''TGM'' series, due to come out in 2010. The new "easy" mode in this game is Konoha mode, a simplified "big" mode in which the goal is to completely clear the playfield of blocks as many times as possible. Its answer to Ti's Shirase mode is Rounds, which goes up to at least level 2,500 and adds new gimmicks every several hundred levels. A location test was held in late 2009, but the game was canceled in 2010 for unclear reasons. The series seems to have died with this, until...
* ''[=TGM2015=]'' (Arcade, release date TBD, working title) -- An in-development ''TGM'' title that recycles many elements from ''TGM 4''. A location test was held in the US in June 2015 and in Japan a month later, and had the Konoha and Rounds modes available.

Unfortunately, if you want to play TGM, especially legitimately, you're not going to get a chance so easily. None of the arcade games have had ports (as mentioned above, [=TGM2=] almost got ported to the [=PS2=]), and ''TGM ACE'', as mentioned above, isn't exactly a TGM game. There are, however, clones that allow you to simulate the TGM series:
* ''[[http://code.google.com/p/nullpomino/ NullpoMino]]'' -- A Java-based open-source clone with a wide variety of modes (not just TGM) and customization, as well as online multiplayer.
* ''[[http://tetrisconcept.net/forum/showthread.html?t=2 Texmaster]]'' -- A more minimalist clone aimed simply at simulating TGM modes. Perhaps noteworthy for inciting the anger of Arika (and allegedly getting the [=PS2=] port of [=TGM2=] cancelled).

The ''TGM'' series has an official Website/{{Twitter}} account [[https://twitter.com/tgm_series here]], although it is primarily in Japanese. It also has an official social media hashtag, ''#tgm_series''.
!!The ''Tetris: The Grand Master'' series provides examples of:
* AdvancingWallOfDoom: TGM+ in TAP has a slowly-rising stack of garbage blocks rise from the bottom, as well as part of Ti's Shirase mode.
* AntiFrustrationFeatures: Perhaps part the appeal of ''TGM'' is that despite being infamous for things like 20G and invisible sections, it does a lot of things to prevent FakeDifficulty:
** Lock delay is present much like in SEGA and Jaleco ''Tetris'' games; it's the reason 20G is playable ''at all.''
** The randomizer is tailored to keep the game fair:
*** The first piece will never be an S or a Z, so you cannot get overhangs in your first few pieces. You also will not get an O as your first piece, as an O followed by S or a Z forces an overhang.
*** The game keeps track of the last 4 pieces dealt, and will select new pieces until it comes across a piece not in the piece history or has already tried 4 times (or 6 in sequels).
*** Said history is initialized to SSSS (or SZSZ in sequels), so such unfortunate piece sequences happen even less often at the start of the game.
** In the first two ''TGM'' games, an I laying horizontally on a surface can only rotate if two cells under the third block from the left are empty, which can make scoring Tetrises at 20G difficult. ''TGM 3'' allows the I to kick off the floor to rotate into a vertical position, but only once.
** In ''TGM 1'', if versus mode is enabled, there's no way to prevent a versus match from happening if another player joins in. From ''TGM 2'' onwards, pressing your respective Start button during play prevents the other player from initiating a versus match, forcing them to play single-player instead.
* BackgroundMusicOverride: The Sakura mode music in ''TGM 3'' overrides all other gameplay BGM, so someone could be in the 1200-1300 section of Shirase mode and be subject to [[SoundtrackDissonance cheerful, relaxing pop-like music]] because the other player started up a round of Sakura.
* BlindIdiotTranslation: In Ti, the message you get for going through a section fast enough reads "COOL!!" But go too slow and you get..."REGRET!!"?
* CatchPhrase: "Ready, go!", spoken by a distinct robotic voice at the start of each game.
* ChallengeGamer: If you're playing this game, and are not one (nor were you introduced to it by a friend), you're probably playing the wrong ''Tetris''.
* ColorCodedForYourConvenience: In TGM 1 and 2, the HUD text turns gold when you reach 20G speed. In TGM 3, the divider line in the level counter turns completely red.
* CosmeticAward: Beginning in ''The Absolute'', medals are given out for fulfilling certain conditions:
** ST (Section Time): [[MetaMultiplayer Coming close to or beating the current section time record.]]
** SK (Skill): Making a large number of Tetrises.
** AC (All Clear): Clearing all blocks from the playing field.
** CO (Combo): Making combos[[note]]Clearing 2 or more lines adds to your combo. Clearing 1 line will maintain the combo but not increment it. Not clearing any lines breaks your combo[[/note]].
** RO (Rotation): Maintaining a large average number of rotations per piece. Not available in ''Terror-Instinct''.
** RE (Recovery): Having a alarge number of blocks on the playing field, and then clearing out most of those blocks. Not available in ''Terror-Instinct''.
* CreativeClosingCredits: The game doesn't end at level 999. After clearing a line at level 999, the board clears and the game goes on for 60 more seconds at 20G speed. In [=TGM2+=] and later games, if you reach the end fast enough and have a high enough grade, you then have to clear the [[BonusDungeon Invisible Roll, in which pieces disappear on lock.]] You not only have to survive this credit roll, but also ''perform well'' [[EarnYourHappyEnding in order to get the highest grades.]] Also, the individual sections of the credits (except for the "Produced by ARIKA" text at the end) are shuffled into a random order, preventing you from figuring out how far you are just by reading the credits.
* DamnYouMuscleMemory: Trying to use [=TGM3=]'s World Rule (based on the more commonly-used Super Rotation System)--the rotation buttons are reversed.
** [=TGM4=] replaces the second counterclockwise rotation button with a special button that makes moving pieces sideways faster. Those who use both CCW buttons may get thrown off by this feature.
* DifficultButAwesome: Firm drop/sonic drop, which drops the current piece to bottom immediately like the hard drop in SRS-based games like ''Tetris DS'', but doesn't lock the piece down. Newer players think it's pointless, but once you get the hang of it, it makes overhangs much less of a time-waster.
* DifficultyByAcceleration: Taken to its logical conclusion: Piece speeds will eventually reach the point where pieces drop instantly upon spawning. This would go on to appear in a few "guideline" ''Tetris'' games, such as ''Tetris DS''.
* DoWellButNotPerfect: Due to a glitch in combo bonus calculation, TAP awards consecutive triple clears far better than consecutive Tetrises. This was corrected in the sequel
* DummiedOut: The original TGM has English text for the game demonstrations (which are in Japanese) buried somewhere in the game's memory, suggesting that TGM was going to have an overseas release.
* DynamicDifficulty: In [=TGM3=], getting a COOL!! will cause you to skip 100 levels of speed when you go to the next section. So if you get a COOL!! for the level 0-99 section, for instance, level 100 will play as if you're playing at level 200.
* EasierThanEasy: [=TGM4=]'s Konoha mode was going to be this; all pieces are doubled in size and [[TheScrappy the S and Z blocks]] never appear.
* EndlessGame: Averted. Unlike most traditional ''Tetris'' games, the ''TGM'' series does not have an endless mode of any sort, with the sole exception of versus mode in the original game.
* FakeDifficulty: Averted for the most part, as the games go out of their way to challenge the player without resorting to clunky mechanics or deliberately trolling the player, but the game has some with regards to the I-piece. In games prior to ''TGM 3'', I-pieces are very difficult to manipulate at 20G speeds. A horizontally-oriented I can only rotate if there are two empty cells under the third block from the left. This means if an I is horizontally oriented and on a completely flat surface and you try to get it into a one-cell-wide shaft on the leftmost or rightmost column, it can't rotate. ''TGM 3'' corrects this with "floor kicks"--the I can "kick off" the floor to rotate into a vertical position once.
* GaidenGame: ''TGM ACE''.
* GameBreakingBug:
** ''[=TGM3=]'' has four frames of input lag[[note]]one frame = 1/60th of a second, referencing the 60 Hz refresh rate of an NTSC television. Therefore, 4 frames = 1/15th of a second[[/note]]. In a game where less than five frames can make the difference between [[AwesomeMoments superplay]] and disaster, this can be enough to break a run if you don't take it into account.
** ''[=TGM2015=]''[='=] C button, intended as a LagCancel button, was also accidentally implemented as a clockwise rotation button.
* GoodBadTranslation: The message you get in [=TGM3=] if you take too long to pass certain levels: "EXCELLENT -- but...let's go better next time"
* HarderThanHard: TAP's T.A. Death, Ti's Shirase, ACE's Another and Another 2, and [=TGM4=]'s Rounds.
* InterfaceScrew
** Invisible roll. That is all.
** In Ti's Shirase mode, at level 1,001, the blocks you get for the rest of the game will have a black-and-white (or black-and-green in World Rule) "[ ]" pattern, as a ShoutOut to the original ''Tetris'' (which uses "[ ]" to represent blocks).
** [=TGM4=]'s Rounds mode had a haze that covers the bottom part of the screen, though its screwiness extends beyond this: any lines made in the haze will ''not clear'' until you complete the current section.
** In the normal Master mode, you're given a ghost piece to guide where pieces will lock in the first 99 levels. It's inexplicably taken away starting at level 100, which can throw off players who look at it for too long. It's especially jarring when the speed resets and you suddenly have to play at low speed without this guidance. This becomes a non-issue in later sections when pieces fall so fast that the ghost doesn't help at all, but in the meantime, expect many misplaces for the next 50 levels or so.
** [=TGM1=]'s Upside-Down mode. There are GM-class players who ''can't even reach level 200 with it.''
* KyuAndDanRanks: The 9-to-1-then-S1-to-S9 grade system is very similar to these.
* LagCancel: ''[=TGM2015=]''[='=]s C button removes the delay for fast horizontal movement and turns sonic drop into a standard hard drop when held down. Unfortunately, [[GameBreakingBug it's also a clockwise rotation button]].
* LighterAndSofter: [=TGM4=] was developed with a theme of "kindness" and incorporated pretty flowery graphics to that end. [[http://www.youtube.com/watch?v=3yMRaCuHk-o See for yourself.]] [[MoodWhiplash Big step down from]] ''Terror-Instinct'' to '''this''', isn't it?
* MusicalSpoiler: If the music cuts out towards the end of a section, the next section is going to have significant changes from the current section.
* NintendoHard: On top of the difficult learning curve, getting GM in any of the games (other than [=TGM1=]) is a feat that takes many months, if not years, to attain. As of this update, there are maybe about 100 or so players with a GM rank in TAP Master (a mere three of which come from outside of Japan), and ''six'' Ti [=GMs=], with only one from outside Japan. [[note]]jin8, [=KAN=], [=DIS=], [=SKH=], [=KFC=], and [=KevinDDR=].[[/note]] That said, the series is actually some of the fairest games in the ''Tetris'' franchise.
* NonIndicativeDifficulty: Level ~300 to 500 in [=TGM1=] and TAP is regarded as the trickiest part of Master mode; since it's partway between minimally-low gravity and [=20G=], it can be tricky to tell what moves are possible and what moves are not.
* NonstandardGameOver: Certain modes have what is known as a ''torikan'', which terminates your game if you hit a specific level too slowly. TAP's T.A. Death and Ti's Master have one at level 500, and Ti's Shirase has ''two''--one at level 500, and one at level 1,000. WordOfGod has claimed that level 1,300 (the highest level reached so far) is a ''torikan'', but even the best players in the world have yet to find a way to see levels 1,301 and up.
** It's confirmed with the leaked data that this torikan doesn't exist.
* PublicMediumIgnorance: Trying to explain the difference between this and other versions of ''Tetris'' to other people, particularly those who haven't seen the infamous "Japan Tetris Finals" or "Invisible Tetris" videos, in which case they'll probably flip out and declare the series as some sort of evil freaky Japanese thing. Pick your poison.
* RankInflation (The series takes this to extremes. And then there's a ''TGM'' fan clone in the planning stages that takes scores to ''Giga Wing'' levels.)
* {{Retraux}}: The final 300 levels of Shirase mode (out of 1300) change the block designs to monochrome (in Classic Rule) or green (in World Rule) "[]" blocks, a tribute to the original Electronika-60 ''Tetris''.
* RocketTagGameplay: ''TGM ACE''[='=]s Versus mode ends in victory for whoever scores 20 lines first. To put it in perspective, that's only five Tetrises.
* SarcasticClapping: The game shoots fireworks at the end of most modes when they end without your losing, but not all endings are victories. If you imagine the fireworks as representing clapping, failing the torikans or missing out on GM qualification conditions may get you this.
* ScoringPoints: Used for [=TGM1=]'s grades, becomes a mere number in [=TGM2=] outside of Normal mode, and is barely even shown in [=TGM3=]. However, screenshots of [=TGM4=] show that it would have had an actual use again in one of the modes.
* SelfImposedChallenge: A handful, from playing one-handed, to playing TAP's normally 2-player Doubles mode by yourself, to [[http://www.youtube.com/watch?v=0K4RxUpZ9Ss the infamous "form a '>' sign in the playing field" challenge]] ([[TheDevTeamThinksOfEverything which the game recognizes, and will give you a secret grade for doing so]]).
* SequelDifficultySpike: Each succcessive game (except ''ACE'') gets faster and faster, and the GM rank more difficult to get. While the first game is comparatively easy to get a GM grade in, in the 10 years since ''Terror-Instinct'' was released, only '''six''' people have managed to get a GM grade.
* SerialEscalation: The games strive to push the limits of speed.
* SeriousBusiness: Surgeon General's Warning - Watching videos of people playing TGM may cause harm to your perception of ''Tetris'' as a mere casual game.
* SoundCodedForYourConvenience: Each piece has its own unique sound that plays whenever the piece associated with it is next.
* SoundtrackDissonance: In [=TGM3=], if one player is playing Sakura mode, and the other player is playing any other mode, the Sakura music will override the non-Sakura player's music. This can lead to some interesting situations for Sakura's cheerful music, such as hearing it ''while in the last 300 levels of Shirase mode.''
* SpiritualSuccessor: To Sega's ''Tetris'' games.
* StalkedByTheBell:
** If the game goes on for more than 15 minutes (which is unlikely in TAP and Ti, in which games usually last no more than 11 minutes), the game speed will suddenly kick into Shirase-level speeds.
** In ''TGM2+''[='=]s Doubles mode, if one player completes Level 300 before the other, they keep playing, but they will be locked into [=20G=] fall speed until the other player finishes.
* TheTetrisEffect: Just as bad as the main ''Tetris'' games. Probably even worse, especially if you can get into this game.
* ThisIsADrill: [=TGM2=] and TAP's level 800-899 background.
* TimeKeepsOnTicking: All line clears take the same amount of time to resolve, and the timer counts up while you wait. This is true of all Tetris games, but in a game where time is a critical part of your ranking, this means that high line clears must be made as frequently as possible and not just for points. Long strings of single clears, especially at low levels, can be toxic to your grade. The pressure of the ''torikans'' ensure that you prioritize speed over all else.
* TrueFinalBoss (The invisible credit rolls of ''[=TGM2=]'' and ''[=TGM3=]''.)
* UnwinnableByMistake: [=TGM1=]'s Big Mode comes close. Blocks are double-sized, but piece movement isn't scaled up to accomodate the increased block size--that is, while all blocks are two cells wide, you still move pieces one cell at a time. Land a piece in an odd-numbered row? You've just made the game go from NintendoHard to pretty much impossible.
** Pieces spawn in a half-column. Although this means you must always move a piece horizontally at least once, it also means that it will always land on the higher of at least two "regular" columns which can be a lifesaver at 20G. It's still really hard though.
** While [=TGM2=]'s and [=TGM3=]'s Big Block Modes correct this (movement is now 2 cells at a time), this isn't the case for [[BonusStage Stage EX3]], [[http://www.youtube.com/watch?v=Xwji8Opk-uc which goes back to TGM1's Big Mode behavior]].

* WombLevel: A number of [=TGM1=]'s backgrounds are biology-themed:
** Level 0-99: Blood cells (except tinted blue).
** Level 100-199: Sperm.
** Level 200-299: Vine-like things.
** Level 500-599: Neurons.
** Level 800-899: A human brain.
** Level 900-999: A human fetus.
* WordSaladTitle: ''Tetris: The Absolute - The Grand Master 2 PLUS'', ''Tetris: The Grand Master 3 - Terror-Instinct'' and ''Tetris: The Grand Master 4 - The Masters of Round''. Whew, that's a mouthful.
-> '''''EXCELLENT''' \\
[[NonStandardGameOver but... \\
Let's go better next time]]''