Following BnB's success, the Korean version of Crazy Arcade was planned to be split into three modes of play: BnB, Tetris, and Hidden Catch. Tetris was the second to be introduced to the line. Sometime after the release of Hidden Catch, however, Tetris was permanently removed from the game.
As its name suggests, Tetris is based on the puzzle game of the same name created by Alexey Pajitnov. The basic gameplay involves the manipulation of falling tetrominoes, shapes consisting of four connected blocks. When a player completes a horizontal row of blocks, the line will be destroyed. The objective of the game is to prevent the blocks from stacking and reaching the top of the playing field until all other teams do so.
In Crazy Arcade, Tetris offered item and non-item modes.
Maps are categorized according to difficulty.
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- Swap: Swaps the user's playing field with another's.
- Clear: Completely wipes the playing field of all blocks.
Tetris featured the same medal-based ranking system as BnB.
Various goods could be purchased at the Shop.