|
|
(15 intermediate revisions by 10 users not shown) |
Line 1: |
Line 1: |
| [http://ist.greenville.edu/drupal/files/wohux.html ultracet online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/ligi.htm tenuate online] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/cucof.htm soma online] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/LukeLookin phentermine online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/pinucep.htm vicodin online] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/hujox.htm cheap ortho] [http://ist.greenville.edu/drupal/files/wusywyx.html cheap vicodin] [http://ist.greenville.edu/drupal/files/lunic.html cheap levitra] [http://dcc.syr.edu/dforum/message.asp?MessageID=49024 online adipex] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/vuxinuz.htm free motorola ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=722 order adipex] [http://www.hollins.edu/ubb/Forum32/HTML/000365.html free nextel ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=21 order ultram] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/jusify.htm nokia ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=262 funny ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=48922 carisoprodol online] [http://bugzilla.internet2.edu/attachment.cgi?id=742 phentermine online] [http://www.hollins.edu/ubb/Forum32/HTML/000283.html valium online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/jowili.htm qwest ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000342.html tenuate online] [http://bugzilla.internet2.edu/attachment.cgi?id=750 sonyericsson ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/licox.htm free motorola ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000319.html cheap cyclobenzaprine] [http://www.hollins.edu/ubb/Forum32/HTML/000295.html cheap norco] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/tokuny.htm cheap lortab] [http://www.hollins.edu/ubb/Forum32/HTML/000354.html flexeril online] [http://bugzilla.internet2.edu/attachment.cgi?id=752 free tracfone ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000285.html carisoprodol online] [http://www.hollins.edu/ubb/Forum32/HTML/000299.html paxil] [http://dcc.syr.edu/dforum/message.asp?MessageID=49063 free qwest ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=249 tramadol online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/sywexyc.htm levitra online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/zexuc.htm didrex online] [http://www.hollins.edu/ubb/Forum32/HTML/000380.html punk ringtones] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/kite.htm ultracet] [http://www.hollins.edu/ubb/Forum32/HTML/000311.html hydrocodone online] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=42 buy xenical] [http://ist.greenville.edu/drupal/files/luho.html free nokia ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/rufog.htm free sprint ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/jujope.htm diethylpropion online] [http://www.hollins.edu/ubb/Forum32/HTML/000294.html online adipex] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/roteryh.htm polyphonic ringtones] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/AndreaHolivel cialis online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49016 cheap ultram] [http://www.hollins.edu/ubb/Forum32/HTML/000336.html clomid online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/hijosij.htm free sagem ringtones] [http://ist.greenville.edu/drupal/files/bigibe.html free nextel ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49027 cheap alprazolam] [http://www.hollins.edu/ubb/Forum32/HTML/000288.html ultram online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/hicif.htm cheap alprazolam] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/sujy.htm free samsung ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=25 viagra online] [http://bugzilla.internet2.edu/attachment.cgi?id=735 motorola ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/jybuhi.htm viagra online] [http://dcc.syr.edu/dforum/message.asp?MessageID=48916 phentermine online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=256 ultram online] [http://bugzilla.internet2.edu/attachment.cgi?id=760 cheap diazepam] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/xyhyj.htm cheap rivotril] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/vuru.htm ativan online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/hykidi.htm clonazepam online] [http://www.hollins.edu/ubb/Forum32/HTML/000281.html tramadol online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=253 buy carisoprodol] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=26 cheap meridia] [http://ist.greenville.edu/drupal/files/dydyse.html valium online] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/rukexo.htm cheap zoloft] [http://ist.greenville.edu/drupal/files/kuxer.html cheap cyclobenzaprine] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/cybo.htm free sonyericsson ringtones] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/nezyz.htm order flexeril] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/lyfogo.htm xanax] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/wofo.htm free nokia ringtones] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/sonuhop.htm valium online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/pevesuz.htm wellbutrin online] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/rypel.htm sildenafil] [http://www.hollins.edu/ubb/Forum32/HTML/000339.html zoloft online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=251 valium online] [http://www.hollins.edu/ubb/Forum32/HTML/000384.html midi ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000290.html cialis online] [http://bugzilla.internet2.edu/attachment.cgi?id=744 qwest ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=266 free real ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/kino.htm free real ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/belizyl.htm polyphonic ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/PhillipRewers/dijuxoj.htm tracfone ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000322.html ultracet online] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=28 norco online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49072 free polyphonic ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=732 levitra online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/woguked.htm ambien online] [http://www.hollins.edu/ubb/Forum32/HTML/000334.html cheap sildenafil] [http://www.hollins.edu/ubb/Forum32/HTML/000333.html cheap prozac] [http://ist.greenville.edu/drupal/files/rucod.html online xanax] [http://www.hollins.edu/ubb/Forum32/HTML/000343.html cheap ortho] [http://ist.greenville.edu/drupal/files/wypy.html funny ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000296.html vicodin online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BilyKroft/koky.htm cheap phentermine] [http://bugzilla.internet2.edu/attachment.cgi?id=740 cheap norco] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/figog.htm lortab online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/kozu.htm cheap hydrocodone] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=24 cheap ativan] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/godufit.htm buy paxil] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/sevuv.htm free mono ringtones] [http://bugzilla.internet2.edu/attachment.cgi?id=755 valium] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/sicofyr.htm cheap tramadol] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/kuvodoj.htm cheap zoloft] [http://dcc.syr.edu/dforum/message.asp?MessageID=49034 hydrocodone] [http://dcc.syr.edu/dforum/message.asp?MessageID=49022 cheap viagra] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/niwupu.htm but albuterol] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/gedenu.htm rivotril online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/dyzoko.htm verizon ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000314.html lorazepam] [http://grid.unimelb.edu.au/twiki/pub/Main/JackLawson/rejyvob.htm order viagra] [http://www.hollins.edu/ubb/Forum32/HTML/000325.html didrex online] [http://ccfl.unl.edu/twiki/pub/Main/SummersFrank/kuzypuh.htm order phentermine] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/nofelyr.htm cingular ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000389.html free ericsson ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49077 free sony ericsson ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=267 motorola ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/kuluc.htm buy zanaflex] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/gekiw.htm flexeril online] [http://www.hollins.edu/ubb/Forum32/HTML/000369.html samsung ringtones] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=259 nokia ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=22 cheap diazepam] [http://www.hollins.edu/ubb/Forum32/HTML/000376.html sonyericsson ringtones] [http://ist.greenville.edu/drupal/files/devowy.html buy lorazepam] [http://ist.greenville.edu/drupal/files/role.html free real ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000351.html cheap rivotril] [http://www.hollins.edu/ubb/Forum32/HTML/000312.html buy ambien] [http://www.hollins.edu/ubb/Forum32/HTML/000337.html albuterol online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49018 cialis online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49035 ambien online] [http://bugzilla.internet2.edu/attachment.cgi?id=746 sagem ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49025 cheap norco] [http://ist.greenville.edu/drupal/files/puweso.html cheap meridia] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/cibedis.htm nexium online] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/zivy.htm free mono ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000352.html hgh online] [http://bugzilla.internet2.edu/attachment.cgi?id=754 cheap ultram] [http://ist.greenville.edu/drupal/files/ruwyze.html ativan online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/linefej.htm wellbutrin online] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/rofev.htm free free ringtones] [http://ist.greenville.edu/drupal/files/pobiwi.html order diazepam] [http://bugzilla.internet2.edu/attachment.cgi?id=751 free sprint ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000345.html lortab online] [http://grid.unimelb.edu.au/twiki/pub/Main/JamesMiller/bopogo.htm carisoprodol online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49071 verizon ringtones] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/relu.htm clomid online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/sifus.htm cheap xenical] [http://bugzilla.internet2.edu/attachment.cgi?id=759 xanax online] [http://www.hollins.edu/ubb/Forum32/HTML/000360.html free free ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=43 cheap wellbutrin] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=15 buy carisoprodol] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/DikVolirev tracfone ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/popuxo.htm sharp ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000291.html ativan online] [http://ist.greenville.edu/drupal/files/covubi.html buy norco] [http://ccfl.unl.edu/twiki/pub/Main/PaulinePauline/wetule.htm sony ericsson ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000362.html free tracfone ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=49075 sonyericsson ringtones] [http://dcc.syr.edu/dforum/message.asp?MessageID=48901 soma online] [http://www.hollins.edu/ubb/Forum32/HTML/000293.html meridia online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/JustinJonson/gelol.htm buy zyban] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/rigyse.htm online clonazepam] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SelmaJeremy/kohe.htm free music ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/pybex.htm cyclobenzaprine online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/AshleighRodriquez/pero.htm ativan online] [http://ccfl.unl.edu/twiki/pub/Main/AlexCarneyham/huvixu.htm cheap paxil] [http://grid.unimelb.edu.au/twiki/pub/Main/JackLawson/nunuso.htm ativan online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49046 nexium] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/cohufyk.htm mp3 ringtones] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/vekorot.htm hgh online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/kuky.htm propecia online] [http://devel.linux.duke.edu/bugzilla/attachment.cgi?id=268 samsung ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BettySmith/kyzefe.htm ortho] [http://ccfl.unl.edu/twiki/pub/Main/MarthaBell/wydyty.htm cheap zyban] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/gefu.htm free punk ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000340.html lipitor online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/ruviti.htm mtv ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000346.html vigrx online] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=41 lorazepam online] [http://cyrusimap.web.cmu.edu/twiki/bin/view/Main/RingoFloper buy fioricet] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/tuju.htm order lorazepam] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/SherylDiu/sypev.htm free cool ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=30 qwest ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000289.html cheap diazepam] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/kuhufid.htm tenuate online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49028 clonazepam online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49015 fioricet online] [http://bugzilla.internet2.edu/attachment.cgi?id=725 cheap ativan] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=36 buy clonazepam] [http://ccfl.unl.edu/twiki/pub/Main/HermanHogg/zivesup.htm propecia online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49061 free mp3 ringtones] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/RobertSmith/donyki.htm hydrocodone online] [http://wwwx.cs.unc.edu/~kmp/twiki40/pub/Main/BilyKroft/hywi.htm carisoprodol online] [http://dcc.syr.edu/dforum/message.asp?MessageID=49051 didrex online] [http://www.hollins.edu/ubb/Forum32/HTML/000300.html levitra] [http://bugzilla.internet2.edu/attachment.cgi?id=738 nextel ringtones] [http://www.hollins.edu/ubb/Forum32/HTML/000356.html cheap zyban] [http://bugzilla.internet2.edu/attachment.cgi?id=736 free mp3 ringtones] [http://www.coe.unt.edu/chec/forum/forum_posts.asp?TID=38 levitra] [http://www.hollins.edu/ubb/Forum32/HTML/000341.html buy celexa] [http://grid.unimelb.edu.au/twiki/pub/Main/NoriJohn/rupo.htm free tracfone ringtones] The action of ''Tetris'' happens within a machine called a [[tetrion]].
| | {{DISPLAYTITLE:Gameplay of ''Tetris''}} |
| | The action of ''Tetris'' happens within a machine called a [[tetrion]]. |
|
| |
|
| The largest part of the tetrion consists of the [[playfield]] measuring ten spaces across by twenty spaces down. | | The largest part of the tetrion consists of the [[playfield]] measuring ten spaces across by twenty spaces down. |
| It has other parts explained below. | | It has other parts explained below. |
|
| |
|
| Randomly selected [[tetromino]]es, or shapes consisting of four square blocks, fall from the top of the playfield one at a time. | | [[Random Generator|Randomly]] selected [[tetromino]]es, or shapes consisting of four square blocks, fall from the top of the playfield one at a time. |
| Each tetromino enters the playfield with a given [[orientation]] and color depending on its shape. | | Each tetromino enters the playfield with a given [[orientation]] and color depending on its shape. |
| Part of the tetrion, called the [[piece preview]], shows the next pieces that will enter the playfield. | | Part of the tetrion, called the [[piece preview]], shows the next pieces that will enter the playfield. |
|
| |
|
| The player can [[rotate]] the falling tetromino ninety degrees at a time within the plane of the playfield by pressing the counterclockwise or clockwise rotation buttons, provided the piece has room to rotate. | | The player can [[rotate]] the falling tetromino ninety degrees at a time within the plane of the playfield by pressing the counterclockwise or clockwise rotation buttons, provided the piece has room to rotate. |
| Some versions of the game [[wall kick|nudge]] the tetromino away from the wall or other blocks in order to make room.
| | Many versions of the game [[wall kick|nudge]] the tetromino away from the wall or other blocks in order to make room. |
|
| |
|
| The player can shift the falling tetromino sideways one space at a time by pressing the left or right arrow or [[DAS|holding it for quicker movement]], provided the piece has room to move. Pieces cannot shift through walls or other blocks. | | The player can shift the falling tetromino sideways one space at a time by pressing the left or right arrow or [[DAS|holding it for quicker movement]], provided the piece has room to move. Pieces cannot shift through walls or other blocks. |
Line 17: |
Line 18: |
| After moving a tetromino to the hold box, the player must then lock the resulting tetromino before holding again (see below). | | After moving a tetromino to the hold box, the player must then lock the resulting tetromino before holding again (see below). |
|
| |
|
| Each tetromino [[drop|moves downward]] slowly by itself. | | Each tetromino [[drop|moves downward]] by itself, at a speed determined by the game rules. |
| Generally a player can use some method to "drop" the tetromino, or make it move downward faster. | | Generally a player can use some method to "drop" the tetromino, or make it move downward faster. |
| Once the tetromino lands on the floor or other blocks, the piece will [[lock delay|delay]] shortly before locking in which time the player can move it. | | Once the tetromino lands on the floor or other blocks, the piece will [[lock delay|delay]] shortly before locking in which time the player can move it. |
| After locking, a player can no longer move the tetromino. | | After locking, a player can no longer move the tetromino. |
|
| |
|
| When a tetromino locks and by doing so fills all empty spaces within one or more rows of the playfield, those full rows will [[line clear|clear.]] | | When a tetromino locks and by doing so fills all empty spaces within one or more rows of the playfield, those full rows will [[line clear|clear]]. |
| Remaining blocks above will move down by as many rows removed. | | Remaining blocks above will move down by the same number of lines cleared below them. |
|
| |
|
| If the playfield has not [[top out|filled up]] with blocks, the next piece enters. | | If the playfield has not [[top out|filled up]] with blocks, the next piece enters. |
Line 30: |
Line 31: |
| *[[General technique]] | | *[[General technique]] |
|
| |
|
| [[Category:General Information]] | | [[Category:Gameplay]] |
The action of Tetris happens within a machine called a tetrion.
The largest part of the tetrion consists of the playfield measuring ten spaces across by twenty spaces down.
It has other parts explained below.
Randomly selected tetrominoes, or shapes consisting of four square blocks, fall from the top of the playfield one at a time.
Each tetromino enters the playfield with a given orientation and color depending on its shape.
Part of the tetrion, called the piece preview, shows the next pieces that will enter the playfield.
The player can rotate the falling tetromino ninety degrees at a time within the plane of the playfield by pressing the counterclockwise or clockwise rotation buttons, provided the piece has room to rotate.
Many versions of the game nudge the tetromino away from the wall or other blocks in order to make room.
The player can shift the falling tetromino sideways one space at a time by pressing the left or right arrow or holding it for quicker movement, provided the piece has room to move. Pieces cannot shift through walls or other blocks.
At the top left, or in some cases the bottom right, of the tetrion is an area called the hold box where a player can store a tetromino for later use.
At any time while a tetromino falls, the player can move it to the hold box, and any tetromino held earlier now moves to the top of the playfield.
After moving a tetromino to the hold box, the player must then lock the resulting tetromino before holding again (see below).
Each tetromino moves downward by itself, at a speed determined by the game rules.
Generally a player can use some method to "drop" the tetromino, or make it move downward faster.
Once the tetromino lands on the floor or other blocks, the piece will delay shortly before locking in which time the player can move it.
After locking, a player can no longer move the tetromino.
When a tetromino locks and by doing so fills all empty spaces within one or more rows of the playfield, those full rows will clear.
Remaining blocks above will move down by the same number of lines cleared below them.
If the playfield has not filled up with blocks, the next piece enters.
See also