North American cover art
|Release||February 13, 2019|
|Playfield size||10 × 20|
Tetris 99 is a game for the Nintendo Switch, based around battle royale-style play. It is available as a free download to subscribers of the Nintendo Switch Online service.
The game currently contains a single multiplayer mode, Tetris 99, with singleplayer modes being available through DLC. In Tetris 99 mode, the aim is to survive as long as possible among all 99 players.
Tetris 99 Mode
The mode is garbage-based, with the player being able to send garbage to other players. The aim is to be the last surviving player.
The player can earn badges from knocking out other players. Knocking out players with badges will cause the player to receive some (all?) of their badges. Collecting badges will increase the player's attack power.
When 50 players are remaining, the piece falling speed begins to increase over time, eventually reaching 1G. 
|Badge number||Attack boost||Required||Total|
By clearing lines the player can send lines of garbage to opponents.
Lines received will go into the pending garbage queue, where there is a delay before the lines appear on the playfield. This delay decreases as players are knocked out. The active set of pending lines will change colour to indicate how close it is to appearing, and when the active set spawns on the playfield the next set will become active.
The player can have at most 12 lines of garbage in their pending queue, and can send at most 20 with one line clear. In both cases any excess lines are lost.
The game's base garbage table is consistent with most guideline games, with the exception of the All Clear bonus.
|Line clear||Lines sent|
|Mini T-Spin Single||0|
|Mini T-Spin Double||1|
|All Clear bonus||+4|
The game counts combos starting from the second consecutive line clear (as 1).
If the player is targeted by multiple opponents then they will receive a boost to attack power for each clear:
|Opponents||Bonus lines sent|
This boost is applied before the badge attack boost.
The game provides four automatic targeting modes:
- Badges: Target opponents with many badges.
- KOs: Target opponents who are close to being knocked out.
- Attackers: Target opponents who are targeting the player.
- Randoms: Target opponents at random.
Alternatively, the player can also switch targets manually.
These are available as part of the Big Block DLC.
CPU Battle mode pits the player against 98 CPU players. The AI difficulty and the player's starting badges can be adjusted.
The player can select between 150 Line and 999 Line modes. In 150 Line mode the starting level can also be selected. In either case the speed level will increase every 10 lines until it reaches the maximum.
The 150 Line speed curve is similar to that of current guideline games.
The Maximus Cup is Tetris 99's first event to be held on March 8 at 5 a.m. PT through March 10 at 11:59 p.m. PT. The contest will be available to players in Canada (excluding Quebec), US, and Mexico. Players must try to win first place as many times as possible. The top 999 players will win 999 My Nintendo Gold Points. A total prize pool of $9,990 US.
The Teto 1 cup held from March 21, 2019 (Friday) 22: 00 ~ March 11, 2019 (Monday) 15: 59. Winning first place during the period will enter you into the draw. Subsequent wins gain you an extra entry.
Europe & Co
Named TETRIS® 99: the TETRIS® 99 Grand Prix, From 13:00 (UK time) on March 8th until 06:59 (UK time) on March 11th. Winning first place once enters you into the draw. The number of Tetris Maximus wins achieved has no influence on the chance of winning a prize. If more than 999 participants achieve a Tetris Maximus win, winners will be determined by random draw.
Available to: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Russia, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland and the United Kingdom.
From 2:00 pm on March 8th to 7:59 am on March 11th. Winning first place once enters you into the draw. The number of Tetris Maximus wins achieved has no influence on the chance of winning a prize. If more than 99 participants achieve a Tetris Maximus win, winners will be determined by random draw.
Australia & New Zealand
The top 99 players with the most 1st place wins will each win 999 Gold Points.
12:00am AEDT / 2:00am NZDT on Saturday 9th March and running until 5:59pm AEDT / 7:59pm NZDT on Monday 11th March