Tetris Battle

Tetris Battle was a Flash based browser Tetris game available on Facebook. To comply with Facebook's terms of use, users must be 13 or older to play Tetris Battle, and birth date is required (to register on Facebook) It was the successor of Tetris Friends (also 13+), but it puts more focus on asynchronous gameplay (pseudo multiplayer). The Facebook integration offers an easy way to challenge Facebook friends or see who is online. Tetris Battle uses a KO system in multiplayer modes (Battle 2P, Battle 6P, and Arena) to determine the winner after 2 minutes and introduced bombs in garbage lines. The game is free to play, but it persuades players to spend real money by limiting playtime and offering tunings, skins and one-use game items. Despite not being very popular among the Tetris community, it got over four million daily users, 16 million monthly active users at its culmination. On June 1, 2019, the game is no longer available, with Tetris Friends also not available.

Features
Tetris Battle uses SRS (the Tetris Guideline rotation) for its rotation system. The game features 7 game modes in total (5 multiplayer modes and 2 single player modes). New players will start with 1000 Tetris Coins and 5 Tetris Cash.

Status Bar
You can see how many Tetris Coins and Tetris Cash you have by looking at the status bar. The amount of energy remaining and your XP level is also shown.

Tetris Cash
Tetris Cash is the only way to buy certain things like energy packs, 1 or 7 day tickets, permanent skins (decors) and armors. It can also be used to buy tuning or unlock modes. There're no proper ways to earn Tetris Cash besides spending real money.

Tetris Coins
Tetris Coins can be used to buy tunings, boosts and temporary skins (decors). You'll earn some Tetris Coins (5, 10, 15, 20, 25, or 30 Tetris Coins) for each game you play. However, if you have purchased Triple Coins, the amount of coins earned after a game will be multiplied by 3. You may also win some in Daily Lottery.

Energy
Energy is Tetris Battle's way to limit playtime. The maximum amount that the player can have is 30. Each game you play costs 5 energy. If you run out of energy, you have to use an energy pack or watch an advertisement. 1 Energy is refilled every 5 minutes (25 minutes per game). There are items that you can use to restore energy and save time:


 * small energy pack: refills 5 energy
 * medium energy pack: refills 10 energy
 * large enery pack: refills 20 energy
 * full energy pack: fully restores your energy
 * collect and use all 7 pieces: fully restores your energy
 * 1 day ticket: playtime is unlimited for one day
 * 7 day ticket: playtime is unlimited for a week

Players can obtain some energy packs in the Daily Lottery. A capsule can also contain energy packs and tickets. Otherwise you have to spend Tetris Cash.

Note: Prior to March 2013, your XP Level was added to your maximum energy. At level 71 you had 100 energy. You lost only 2 energy when playing against Facebook friends.

Players can also refill energy for a cost of 5 Tetris Cash. Sometimes, there will be an Energy Refill for 1000 Tetris Coins, which should be the best way to refill energy. You have to go to the shop to make this purchase.

XP Level
More or less, your XP Level tells you how long you've played Tetris Battle. You earn experience (XP) by playing game. You'll gain 1 level when you've reached enough XP. Each time you level up, your energy will be refilled and you get 200 Tetris Coins (was 1 Tetris Cash prior to March 2013). Besides that, experience is pretty useless. You have to reach a certain level before you can unlock and use boosts (to not confuse new players).

Other Features
These are the other features in the game. These include boosts, skins, and more.

Boosts (Power Ups)
The manual refers to them as "Game Items". In certain modes (Battle 2P, Battle 2P+, and Battle 6P) they can be used to gain an advantage over your opponents. They must be activated before you use it in a game. Some people may consider their use as cheating. There are 4 type of boosts:


 * Shield: Randomly blocks up to 15 garbage lines at the begin of each game.
 * Final Rush: Allows the player to send up to 15 extra lines in the last 30 seconds.
 * Twin Bomb: All garbage lines have 2 bombs instead of 1
 * 1 KO: Triggers a win after 1 KO. Only usable in Battle 2P+ mode.

There might be some special days where the effect of these boosts is doubled.

Daily Lottery

 * Tetris Coins
 * 1 Tetris Cash
 * boost
 * one of the 7 piece shapes (I, J, L, O, S, T, or Z)
 * an energy pack
 * a capsule spin

Daily Bingo
As of 2015, Tetris Battle features some kind of Bingo game. Daily achievements (such as performing a T-spin, Tetris, back-to-back line clear or playing a certain mode) are arranged in a 5x5 matrix. Getting all 5 achievements in a row, column or diagonal scores a bingo which is rewarded by Tetris Coins or other small rewards (such as the 1 KO game item).

Tuning
You can purchase tunings with Tetris Coins or Tetris Cash and play faster using these tunings. There are 4 types of tunings:


 * left/right speed (DAS & ARR)
 * line clear speed
 * soft drop speed
 * next piece queue (1 to 5 Previews)

The fastest DAS and ARR settings are comparable to those in Tetris Friends. Soft drop and line clears are faster than in Tetris Friends.

Skins (Decors)
Skins determine how your playfield looks like. You have to purchase a skin before you can use it. Skins bought with Tetris Coins can just be used for a week. The 3 different types of skins are Mino skins, Ghost skins and bomb skins. Some skins, such as Flower, Chocolate, Easter Hunt, and Snow are seasonal (Valentine, Easter, Thanksgiving, Halloween, Xmas).

Weekly Tournament
This feature was removed around March/April 2013. The goal was to get as many points as possible within 1 week. Each day you could play 3 Battle 2P games that didn't consume any energy. If you wanted to play more games, then you had to collect Tokens. Your opponents were assigned to you according to your points. The less points you had, the easier the opponent, and the more points you had, the harder the opponent. You got more points for being on a winning streak. At the end of the week you received a reward according to how well you performed. The best 100 players got some Tetris Cash or permanent skins.

Asynchronous gameplay
Whenever you don't play Arena, against a Facebook friend or a challenger (recommended opponent), you'll encounter replays. In this case, an earlier played game will be used to simulate multiplayer experience. Your opponent needn't even be online. It's an easy way to find opponents of your skill level, and you needn't wait for your opponents and you can pause whenever you want (the game will be paused for 30 seconds). On the other hand, you have no option to chat and your opponent can't react to your moves. Asynchronous gameplay doesn't work with garbage lines that have holes.

Modes
There are 7 modes in total, namely : Marathon, Sprint, Sprint 4P, Battle 2P, Battle 2P+, Battle 6P and Arena.

Marathon
Complete the 15 levels with a score as high as possible. This game mode allows only 5 rotations and 5 movements before the piece locks, unlike other modes, which allow 15 rotations and 15 movements before locking. The higher the level, the higher the gravity and the harder the difficulty. You have to clear 5 lines for the levels 1 to 5, 10 lines for the levels 6 to 10 and 15 lines for the levels 11 to 15. You get points for clearing lines and doing T-Spins. The corresponding points can be found to the right side. These points are multiplied with your current level. You also get 2 points for each row you hard drop a piece and 1 point for each row you soft drop a piece. Perfect clears are not rewarded. Back-to-Back increases the points of Tetrises and T-Spin line clears by 50 %.

The best strategy for the early levels are the 4-wide Combo setup, ST Stacking and Infinite T-Spin Triple setup. To compare these, assume we clear 18 lines on level 1 and have already started the Back-to-Back chain. Let's also neglect the drop points. In this case a 4-wide 18 combo yields 9,450 points, Infinite TST 10,800 points and idealized ZT Stacking (4 TSDs per Tetris) 9,000 points. From these numbers, Infinite TST is the most effective. However, ZT Stacking will be more effective than Infinite TST in practice. It's more stable and a very skilled player can pull it through until the end.

Versus Modes
There are four types of Versus Modes: Battle 2P, Battle 2P+, Battle 6P, Arena. They have in common that they all use a KO System to determine the winner of each game. A Knock Out appears when the next piece collides with the stack when it spawns. In this case the opponent who send the last garbage line to this player will score the KO. The player who scores the most KOs will become the winner. More explicitely at the end of each game players will be sorted by:


 * number of KOs
 * number of sent garbage lines (if equal number of KOs)
 * the height of the stack (if equal number of KOs and sent lines)

Each round takes 2 minutes (120 seconds). Rounds can end prematurely, if a player scores 2KOs (Battle 2P+), 5 KOs, (Battle 2P) or 10 KOs (Battle 6P and Arena) or all opponents are knocked out 5 times. All 4 versus modes have ranks. When playing against lower ranked opponents in Battle 2P and Battle 6P, concrete lines are added to your field that can't be cleared in order to balance the game. This handicap can be turned off when playing against friends.

Garbage
Tetris Battle uses Garbage Countering but not Garbage Blocking. So whenever there are incoming lines, these lines are canceled before sending garbage. After you drop a piece, the remaining lines are entered no matter if you've cleared a line or not.

All 4 versus modes (Battle 2P, Battle 2P+, Battle 6P and Arena) use the same line sent table. The exact numbers for each attack can be found on the right side. Combos are pretty strong. Even small combos send a lot of lines. Back-to-Back Tetrises and T-Spins send 50 % more lines than usual. This makes T Spin Triples more powerful than in most other games. The Garbage lines for a Perfect clear stack with those for Combos and Line clears. Thus starting a game with a Perfect clear will usually send 13 lines.

However, there are 3 types of garabage depending on the mode you play and on the bombs option you use There are 3 different types of garbage.

Note: As of 2015, the position (column) of the bombs will switch after every line. So, some statements above may be outdated.

Bombs
This is the default garbage type in Battle 2P and Battle 6P. In contrast to most other multiplayer games, there's a bomb (or 2 if playing with Twin Bomb boost) instead of a hole in each garbage line. If a piece was dropped on a bomb, this bomb explodes and the corresponding garbage line is cleared. The position of the bombs (column) will switch after every 2 lines or after each attack. Combos and line clear are considered separate attacks. If 2 bombs are located above each other, then both bombs will detonate when dropping a piece on the upper bomb. This will send an additional line which is another separate attack For example if you drop a piece on a bomb pair and clear a Double at the same, then you send 2 lines of messy garbage. Same is true if your Double increases the combo counter to 1 (2 consecutive line clears, the second one is a Double). Detonating a bomb without clearing a normal line will maintain the Back-to-Back chain (next Tetris or T-Spin will have B2B bonus).

The garbage of T-Spin Doubles and Tetrises is very clean (always 2 bombs above each other). It can be cleared easily by a Downstack combo which sends very messy garbage itself. Going for Back-to-Back attacks may backfire if you don't try to top out your opponent.

Solid Garbage
When setting the Bombs option to "Off", this garbage type will be used in Battle 2P and Battle 6P. Solid garbage lines have no hole or bomb inside them. They can only be cleared by sending garbage lines yourself. If you have solid garbage lines in your field, then you must clear them first before you send garbage to your opponent. So sending lines over to your opponent offers some protection from his/her attacks at the same time.

Playing with Solid Garbage is more like Ultra than real Multiplayer. There's no real interaction with garbage. ST stacking and 4-wide Combo Setups seem to be the best strategies.

Note: Battle 2P+ can also be played this way, but you have to turn off bombs in Battle 2P or Battle 6P beforehand.

Normal Garbage
This garbage type is only used in Arena. Each garbage line has exactly 1 hole. There seems to be a 90 % chance that the hole will switch after every attack. Combos and line clears are considered seperate attacks. This is also true for the Back-to-Back bonus. For example if you send a B2B Tetris, then your opponent will receive 6 lines (4+2) of garbage, whereas the garbage column will most likely switch one time. The line clear garbage will be canceled (countered) first and is inserted above that of combos and Back-to-Back.

Doing Back-to-Back attacks while downstacking is a good strategy for this type of garbage. Maintaining the Back-to-Back chain is more important than in Tetris Friends. For more than 2 players in a room, 4-wide combos are also a good choice.

Maps
Only 3 modes (Battle 2P, Battle 6P, and Arena) can be played with Maps. This means that you start the game with a predefined shape instead of an empty field. There are 12 maps in total. In Battle 2P+, you can't choose a map.

Ranks
All of the multiplayer modes have ranks that illustrate your skill in those modes. Your rank in one game mode does not affect your rank in the other modes. Initially, there were 25 ranks, then it was increased to 50, later to 100, 105 and then 110. You'll need to collect Stars to rank up. Stars are earned by winning games. After the rank number changes (rank up/down), you'll start at 2 Stars. You rank down when reaching a negative number of Stars, but if you are rank 1, this does not occur, as players can't go down to rank 0, your rank will still be rank 1 and you will be called the "Tenderfoot". You rank up when reaching 5 Stars, respectively 50 Stars from rank 101 to 110. Players with rank 110 and 50 Stars will be called the "God of Tetris". There is no benefit from possessing a high rank besides personal pride. You earn XP faster on higher ranks, but this doesn't matter anymore, since XP Level doesn't affect your maximum energy.

The Sprint 4P, Battle 2P and Battle 6P modes have leaderboards. Players are sorted by ranks and number of wins. There's a seperate leaderboard that just shows your friends. In 2015, the leaderboards were removed.

* Newbie is called Tenderfoot if 0 stars

Trivia

 * In the Battle 2P mode of Tetris Battle, the player has to get 5 KO's to win, while in the Tetris Friends version of the Battle 2P mode, the player needs to get only 3 KO's.
 * A T-Spin Mini that does not clear a line is displayed as "T-Spin", while a T-Spin Mini Single is displayed as "T-Spin Mini", similar to Tetris Online (Japan).
 * Tetris Battle uses the font named "KRKZ Blockes" for the main text.