Tuper Tario Tros.

Tuper Tario Tros. is a mash-up of two classic games: Super Mario Bros. and Tetris. Inspired by the puzzle platforming in Lucidity, this is the first in a series of deep water experiments by the developers to test experimental game prototypes. The game starts like a traditional Super Mario Bros. platformer clone with the classic elements, enemies and power-ups, until Mario encounters a wall that cannot be passed. From that point on, it is possible to switch to Tetris-style gameplay with the press of a key to move around and rotate falling blocks to redesign the level, creating lines to make blocks disappear or building bridges to cross gaps.

While in Tetris mode, Mario cannot be moved, but the gameplay is not paused. Enemies continue to move around and the screen also moves forward at a steady pace. Blocks can also be used to crush enemies. At the end of the level, there is an additional section where both modes need to be used quickly in succession to complete a time-limited end sequence.