Question: What game did Alexey Pajitnov's partner produce?
Sentence (from "Henk Rogers"): He is known for producing Japan's first major turn-based role-playing video game "The Black Onyx", securing the rights to distribute "Tetris" on video game consoles where the game found popularity, and as the founder of The Tetris Company which licenses the "Tetris" trademark.
Relevant evidence: Yes