Tetris (Mega Drive)

Tetris for Sega Mega Drive/Genesis, an adaption of 1988 arcade game, went unreleased due to various licensing issues.

Game Modes

 * Normal: The game continues until the player dies
 * Time Trial: A three minute countdown
 * Doubles: Two-player co-op

Items
This game has an items option. When enabled, sometimes flashing Tetrominos will appear. When at least one line is cleared with the flashing Tetromino, the item will activate its effect. Excluding the S Tetromino, when these flashing Tetrominos are placed without clearing lines, they will stop flashing and thus the item is lost. The item effects are locked to each Tetromino: The effects of the rest of the Tetrominos are unknown and do not have any noticable effects on the gameplay.
 * T: Erase nearby three lines.
 * L: Reduce the level by one.
 * S: This item does not disappear when placed, and do different things depending on whether the S Tetromino was "activated" by immediately clearing lines like other items, or when "placed" on the field without clearing lines.
 * Placed: It will continue flashing in the field and will disappear after a few seconds. There seems no special effects when "placed" S blocks are cleared before disappearing.
 * Activated: The whole S Tetromino disappears when the lines are cleared, in addition to the blocks included in the lines.