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'''''Combos''''' are bonuses that exist in certain games which reward multiple line clears in quick succession. The exact conditions for triggering combos, and the amount of importance assigned to them, vary from game to game.


= Games with combos in their rules=
'''''Combos''''' (known as '''''REN''''' mainly in Japanese games) are bonuses that exist in certain games which reward multiple [[line clear]]s in quick succession. The exact conditions for triggering combos, and the amount of importance assigned to them, vary from game to game.
 
== Combo system (consecutive line clears) ==
 
This system is used in several Tetris games, particularly those based on the [[Tetris Guideline]]. The combo counter starts at -1. For each placed piece that clears at least one line, the combo counter increases by 1; if a placed piece does not clear a line (also known as a combo break), the counter resets back to -1. For example, two consecutive line clears equals a 1-combo. When the combo counter increases beyond 0, the player receives a reward, depending on the mode. <br />
For single-player modes, the [[Scoring#Recent guideline compatible games|standard scoring]] formula for combos is '''50 points × combo count × current level'''. <br />
For multiplayer modes with traditional Battle mechanics, combos add extra [[Garbage|garbage]] lines being sent to the opponent. The following table lists the amount of extra garbage sent in official Tetris games:
 
{| border=1 cellspacing=0 style="text-align:center;"
|-
! bgcolor=#9AF | Combo
! bgcolor=#9AF width=50 | '''Guideline Standard ([[Tetris Online (Japan)]] onwards)'''
! bgcolor=#9AF width=50 | '''[[Tetris Friends|Tetris Friends]]'''
! bgcolor=#9AF width=50 | '''[[Tetris Friends|Tetris Friends (Expert Plus)]]'''
! bgcolor=#9AF width=50 | '''[[Tetris Battle (Facebook)]]'''
! bgcolor=#9AF width=50 | '''[[Tetris 99]]'''
! bgcolor=#9AF width=50 | '''[[Puyo Puyo Tetris 2]]'''
! bgcolor=#9AF width=50 | '''[[Tetris Effect|Tetris Effect: Connected]]'''
! bgcolor=#9AF width=50 | '''[[Tetris Effect|Tetris Effect: Connected (ZONE enabled)]]'''
|-
! bgcolor=#9AF | 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|-
! bgcolor=#9AF | 1
| 0
| 0
| 0
| 1
| 1
| 0
| 0
| 0
|-
! bgcolor=#9AF | 2
| 1
| 1
| 1
| 1
| 1
| 1
| 1
| 1
|-
! bgcolor=#9AF | 3
| 1
| 1
| 1
| 2
| 2
| 1
| 1
| 1
|-
! bgcolor=#9AF | 4
| 2
| 1
| 1
| 2
| 2
| 2
| 2
| 2
|-
! bgcolor=#9AF | 5
| 2
| 3
| 2
| 3
| 3
| 2
| 2
| 2
|-
! bgcolor=#9AF | 6
| 3
| 3
| 2
| 3
| 3
| 3
| 2
| 2
|-
! bgcolor=#9AF | 7
| 3
| 4
| 3
| 4
| 4
| 3
| 3
| 2
|-
! bgcolor=#9AF | 8
| 4
| 4
| 3
| 4
| 4
| 4
| 3
| 2
|-
! bgcolor=#9AF | 9
| 4
| 4
| 4
| 4
| 4
| 4
| 3
| 2
|-
! bgcolor=#9AF | 10
| 4
| 4
| 4
| 4
| 5
| 4
| 3
| 3
|-
! bgcolor=#9AF | 11
| 5
| 4
| 4
| 4
| 5
| 4
| 3
| 3
|-
! bgcolor=#9AF | 12
| 5
| 5
| 5
| 4
| 5
| 4
| 3
| 3
|-
! bgcolor=#9AF | 13+
| 5
| 5
| 5
| 4
| 5
| 5
| 4
| 3
|-
| style="background-color:#444444; border:0px" colspan=9 |
|-
! bgcolor=#9AF | Sum
| '''39'''
| '''39'''
| '''35'''
| '''40'''
| '''44'''
| '''37'''
| '''30'''
| '''26'''
|}
 
Other games use slight variations of the aforementioned procedure. In the [[Tetris The Grand Master (series)|Grand Master series]], the increment of the combo counter depends on how many lines are cleared at once and the combo counter is used to calculate a score multiplier for the corresponding line clear.
 
== General strategy ==
By leaving at least two columns open, one can clear combos easily. However, an I [[tetromino]] cannot clear a line in this case, so the [[Hold piece|Hold box]] should contain a non I piece, if the game allows, or the bottom of the funnel should be 1 cell wide.
{|
|- valign="top"
|<playfield>
..........
G.........
GG.....G..
GGG.GG.G..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGG.S
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGG.S
</playfield>
Combo number 1<br>
(with T in hold)
|''You can help illustrate this combo by [http://www.tetrisconcept.com/wiki/index.php?title=Combo&action=edit&section=1 adding a piece].''
|}
{|
|- valign="top"
|<playfield>
..........
G.........
GG.....G..
GGG.GG.G..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGGGS
GGGGGGGGG.
GGGGGGGGG.
GGGGGGGGG.
</playfield>
Combo number 2<br>
(with slot for I)
|''You can help illustrate this combo by [http://www.tetrisconcept.com/wiki/index.php?title=Combo&action=edit&section=1 adding a piece].''
|}
 
Various [[skimming]] methods can end up in combos.
 
== Official Tetris Games with Combos in Rules ==
* [[Magical Tetris Challenge]]
* [[Magical Tetris Challenge]]
* [[Tetris The Grand Master]]
* [[Tetris The Grand Master]]
* [[Tetris The Absolute The Grand Master 2]]
* [[Tetris The Absolute The Grand Master 2]]
* [[Tetris The Absolute The Grand Master 2 PLUS]]
* [[Tetris The Grand Master 3 Terror-Instinct]]
* [[Tetris The Grand Master 3 Terror-Instinct]]
* [[Cultris]]
* [[Tetris Zone]] and subsequent post-2007 Guideline-based Tetris games ([[Tetris Splash]], [[Tetris Party]], [[Tetris Effect]], etc.; notable exceptions include [[Tetris (PlayStation Portable)]] and [[Tetris (PlayStation 3)]])
* [[Tetris Zone]]
 
* [[Tetris Online Japan]]
[[Category:Gameplay]]

Latest revision as of 05:06, 12 September 2021

Combos (known as REN mainly in Japanese games) are bonuses that exist in certain games which reward multiple line clears in quick succession. The exact conditions for triggering combos, and the amount of importance assigned to them, vary from game to game.

Combo system (consecutive line clears)

This system is used in several Tetris games, particularly those based on the Tetris Guideline. The combo counter starts at -1. For each placed piece that clears at least one line, the combo counter increases by 1; if a placed piece does not clear a line (also known as a combo break), the counter resets back to -1. For example, two consecutive line clears equals a 1-combo. When the combo counter increases beyond 0, the player receives a reward, depending on the mode.
For single-player modes, the standard scoring formula for combos is 50 points × combo count × current level.
For multiplayer modes with traditional Battle mechanics, combos add extra garbage lines being sent to the opponent. The following table lists the amount of extra garbage sent in official Tetris games:

Combo Guideline Standard (Tetris Online (Japan) onwards) Tetris Friends Tetris Friends (Expert Plus) Tetris Battle (Facebook) Tetris 99 Puyo Puyo Tetris 2 Tetris Effect: Connected Tetris Effect: Connected (ZONE enabled)
0 0 0 0 0 0 0 0 0
1 0 0 0 1 1 0 0 0
2 1 1 1 1 1 1 1 1
3 1 1 1 2 2 1 1 1
4 2 1 1 2 2 2 2 2
5 2 3 2 3 3 2 2 2
6 3 3 2 3 3 3 2 2
7 3 4 3 4 4 3 3 2
8 4 4 3 4 4 4 3 2
9 4 4 4 4 4 4 3 2
10 4 4 4 4 5 4 3 3
11 5 4 4 4 5 4 3 3
12 5 5 5 4 5 4 3 3
13+ 5 5 5 4 5 5 4 3
Sum 39 39 35 40 44 37 30 26

Other games use slight variations of the aforementioned procedure. In the Grand Master series, the increment of the combo counter depends on how many lines are cleared at once and the combo counter is used to calculate a score multiplier for the corresponding line clear.

General strategy

By leaving at least two columns open, one can clear combos easily. However, an I tetromino cannot clear a line in this case, so the Hold box should contain a non I piece, if the game allows, or the bottom of the funnel should be 1 cell wide.

..........
G.........
GG.....G..
GGG.GG.G..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGG.S
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGG.S

Combo number 1
(with T in hold)

You can help illustrate this combo by adding a piece.
..........
G.........
GG.....G..
GGG.GG.G..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGGGS
GGGGGGGGG.
GGGGGGGGG.
GGGGGGGGG.

Combo number 2
(with slot for I)

You can help illustrate this combo by adding a piece.

Various skimming methods can end up in combos.

Official Tetris Games with Combos in Rules