Tetris Monsters

Tetris Monsters (Japanese: テトリスモンスター, Romaji: Tetorisu Monsuta) is a Japanese mobile phone game similar to Puzzle & Dragons. It's been released in 2013 and will be discontinued at the end of 2016. In its core, it's a pay to win game but not nearly as bad in this regard as Tetris Blitz. The player collects (cute) "monsters" to set up a team consisting of 5 monsters to battle enemy monsters. A battle is held in some kind of Tetris match.

Gameplay
The player can fight in 3 different spots: in a campain, in some weekly challenges and in boss battles. The game uses 2 different currencies: coins and emeralds. Emeralds are needed to buy packages with stronger monsters (the monster you get is randomized) or items. Leveling up is rewarded by some emeralds and allows to use more stronger monsters in your team.

A Tetris match is held in an 8 columns wide and 14 rows high matrix. Completed lines are not removed. Instead, they are transferred to the bottom of the matrix. So eventually, the player runs out of space and has to launch an attack. The more lines completed, the more monsters attack in your team. The faster the player stacked or the more T-Spins, Tetrises and Perfect Clears the player made, the stronger the attack per monster. After the player's attack, the remaining enemy monsters may counterattack.

Each monster also has a unique ability which can be used after enough Tetris pieces were placed in the matrix. Those abilities include healing, removing bottom lines from the matrix, destroying blocks near the surface, dealing direct damage to the enemies or boosting team stats.

Monsters come in 11 tiers and 7 classes (represented by the 7 rainbow colors which are also used in Tetris). High-tier monsters have more hitpoints and better offensive stats. Monsters can be combined to create higher-tier monsters. Monsters can also be sacrified to make another monster gain experience (level up). The 7 classes have strengths and weaknesses:


 * Blue (water) is strong against Red (fire)
 * Red (fire) is strong against Green (nature)
 * Green (nature) is strong against Orange (earth/stone)
 * Orange (earth) is strong against Blue (water)
 * Yellow (light) is strong against Purple (darkness)
 * Purple (darkness) is strong against Yellow (light)
 * Cyan (air?) is strong against everything else