Emeraldia/Gameplay

Controls

 * Joystick: Use the 4-way joystick to move the pieces left, right, and down, for up to 24 extra points in the case of the last; pushing it up has no effect, in the Normal and Versus Modes, but in the Adventure Mode, it will activate your current reserve special item when you press the Rotating Button.
 * Rotating Button: Use this button to rotate those pieces in an anticlockwise direction; it is not possible for you to rotate them in a clockwise direction.
 * 1 or 2 Player Buttons: Push either of these buttons to proceed to the mode selection screen, then push your joystick left and right to select a mode.

Blocks (ブロックス)
Three of these cubes make the game pieces that fall down from the top of the screen, and they come in six different colours; orange, red, green, cyan, blue and magenta. When the player lines up three identically-coloured ones vertically or diagonally, they will crack - and when a fourth one of the same colour lands on top of the three cracked ones, they will shatter. There is also a seventh type of block that is exclusive to Versus Mode.

Ojama Blocks (おじゃまブロックス)
These orange blocks, which appear to have the face of Gerochan from Super World Court, are exclusive to Versus Mode; when one player shatters a lot of blocks at once, their dolphin (Minto or Gamu) will blow up a beach ball, then bounce it over to the other player's side of the screen (it will explode on impact). The text "X BLOCKS COMING!" (X depending on how long the chain reaction was, which determines the beach ball's size), will then appear in that player's display in the centre of the screen as that number of Ojama Blocks come up into view from the bottom of the screen - and they cannot be cracked or shattered by any means, given that they do not make the game pieces that fall down from the top of the screen, even when lined up to do so.

Stars (スターズ)
If you choose to play in Normal Mode on Chūkyū (中級) or Jōkyū (上級) level (or in Versus Mode), the edge of the "NEXT" box will fill up every time you crush a block; once it is completely filled to the top, one of these (originally from Cosmo Gang: The Puzzle) will fall down from the top of the screen, and eliminate every block of one colour from the screen, when it lands. If you choose to play in Normal Mode on Shōkyu (初級) level, however, one will only appear when your screen is almost filled to the top - and once it has reached speed level 20, another will automatically fall down from the top of the screen and eliminate every block before Minto comes up into view from the bottom of the screen with the three-script text Shōkyu kuria omedetō!! (初級クリアおめでとう!!) above him. The three-script text of Tsugi ha chūkyū · jōkyū ni charenjida!! (次は中級・上級にチャレンジだ!!) will then appear below him.