Tetris Battle Gaiden

Tetris Battle Gaiden
Tetris Battle Gaiden Super Famicom box art
Developer(s)	Bullet Proof Software
Publisher(s)	Bullet Proof Software
Platform(s)	Super Famicom
Release	JP: December 24, 1993
Gameplay info
Next pieces	3 (shared with opponent)
Playfield size	10 × 20
Hold piece	No
Hard drop	No
Rotation system	BPS rotation

Tetris Battle Gaiden is a Tetris game developed and published in 1993 by Bullet Proof Software for the Super Famicom. Players compete in versus matches, against a CPU opponent, or a local opponent. The game is notable for its unique gameplay involving crystals and character abilities.

Gameplay

Both players draw from the same 3 piece preview. The player who places the next piece gets the next one at the top.

Some tetrominos have crystals in them. Players must clear a line containing a crystal to collect it. Since the pieces are shared, players must play strategically to get pieces with crystals, and leave the ones without crystals for the opponent.

Each character has 4 attacks. These are unlocked progressively by collecting crystals. The meter on the side indicates the amount of crystals needed for the next level with a yellow arrow, and the level 4 attack with a purple arrow. Once the player has enough crystals for an attack, they can press Up on the dpad to active the attack. Activating an attack discards the active piece for both players.

The number of crystals needed per level can be configured in the settings menu. By default one crystal is needed, but it can be changed to be up to five.

Topping out

Blocks that get pushed up the vanishing zone are deleted. The only way to top out is by place a tetromino partially or fully above the 20th row.

Characters and abilities

	Halloween
	Level 1 Fry - Fills the bottom 3 rows with blocks. These lines are cleared once the next piece is placed, and the lines are sent to the opponent. Crystal blocks are converted into normal blocks and are not collected. Level 2 Dark - Blacks out the opponents playfield, and only a small section under the active piece is visible. Level 3 Vampire - Steals the opponent's crystals. Level 4 Bomb - Destroy random blocks on the opponent's field.
	Mirurun
	Level 1 Mirurun - Removes the bottom 4 rows of the player's field. The lines removed are not sent to the opponent. Level 2 Inversion - Inverts the opponent's controls for their next 3 pieces. Level 3 Pentaris - Send five lines of garbage to the opponent. Level 4 Sirtet - All rows containing blocks on the opponent's field are inverted, so that spaces are converted to blocks and non-crystal blocks are converted to spaces.
	Shaman
	Level 1 Moses - The playfield is split in two, blocks on the left of the center are pushed two columns to the left, and blocks to the right are pushed two columns to the right. Blocks at the extremities are pushed out and lost. Any floating non crystal blocks fall as far as they can. This leaves a 4 wide center well. Blocks do not fall after the split if they are stone, or if Ninja's web attack is active. Level 2 Rotation - The opponents next 3 pieces will rotate rapidly when they try to soft-drop. Rotating a piece with A or B buttons will rotate the piece rapidly as well. If a piece cannot rotate, such as when next to a wall, it can not be soft dropped. Pieces can also not be manually locked. Level 3 Curse - During this attack, every piece the opponent places will one stone garbage line will be added to their stack. Additionally lines sent as garbage will also be stone. Level 4 Prayer - Randomly uses any of the opponent's level 4s.
	Aladdin
	Level 1 Seesaw - Send the bottom 2 rows of the player's field to the opponent. Crystal and stone blocks are included. Level 2 Shield - Player is immune to any lines sent by their opponent for a short time, except for powers that raise stacks directly. Level 3 Fax - Copies the player's field to the opponent's field. Level 4 Remote - The movements of the opponent's next 2 pieces will be controlled by the player.
	Princess
	Level 1 Sol - Fires a beam of light that clears three adjacent columns off the player's field. Can be directed. Has a 3-second timer before fired automatically. Level 2 Mirror - Steals the next crystal power used by the opponent. Level 3 Paralysis - Stops the opponent from rotating their next 3 pieces. Level 4 Copy - Replaces the player's field with a copy of their opponent's.
	Bit
	Level 1 Stardust - 9 stars will fall in random locations on the player's field, clearing lines. Cleared lines are not sent to the opponent. Level 2 Fever - Until a combined total of 6 pieces are placed by both players, every piece in the pool will be a copy of the piece the player had before activation. Level 3 Gang - Allows the player to steal every crystal on their opponent's field and this creates holes on it. Some crystals are given to the player. Level 4 Mambo - The opponent's stack is randomly shuffled.
	Ninja
	Level 1 Assemble - Pushes all player's blocks to one side of the field. Level 2 Fraud - Randomizes the opponent's next 5 falling pieces. Level 3 Ruin - For the opponent's next 6 pieces, cleared lines do not drop the pieces from the row above them. Level 4 Medusa - Converts the blocks on the opponent's field to stone blocks.
	Wolf-man
	Level 1 Cut - Clears the top 4 rows of the player's field. Level 2 Nue - Stops the opponent from fast-dropping their next 4 pieces. Level 3 Pals - Lines sent by the opponent will lower the player's stack for a short time. That excludes lines sent through powers. Level 4 Thwack - For the player's next 4 pieces, non-crystal blocks will drop from any line cleared, allowing lower incomplete lines to be also cleared.
	Dragon
	Level 1 Press - Pushes the player's stack together by 1 row, eliminating the 2 center columns and down 3 rows. Level 2 Wish - The player can choose any piece they want by using the L/R buttons for their next 4 pieces. Level 3 Roulette - An on-screen roulette randomly scrambles the opponent's controls for their next 3 pieces. Level 4 Change - Swaps both players' fields.
	Grand Princess
	Level 1 Hyper Fry - Fills the bottom 4 rows with blocks. Crystal blocks are collected. Level 2 Reverse - Reverses the opponent's movement controls for the next 4 pieces. Level 3 Double - Any rows cleared by the player's next piece will send double garbage. Level 4 Clear - Clears the player's entire field.