In 'Tetris: Unbound Realities', players dive into a surreal world where the iconic falling blocks hold the key to navigating through dynamically shifting realms. Each time you line up a complete row, you unlock memories of the enigmatic architect who designed this dreamscape, revealing layers of a dramatic tale filled with love, betrayal, and redemption. The unique twist? You must choose how to manipulate both the Tetris blocks and your own decisions while interacting with quirky characters and solving intricate puzzles, leading to multiple endings and outcomes based on your alignment with different factions represented by various Tetrimino shapes.