Tetrius is a Casual, Arcade, Exploration PC game, developed by Migrate Studio, available on Steam and published by Migrate Studio.
About TETRIUS from Wikipedia: "Tetris is a computer game originally invented and developed by the Soviet programmer Alexei Pajitnov. The game was released on June 6, 1984 - at that time Pajitnov worked at the Computing Center of the USSR Academy of Sciences."
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Casual Arcade Exploration Clicker 2D 1980s 1990's Indie Automation Singleplayer