If you liked this
Games like Mumei ≠ Gura
If you finished Mumei ≠ Gura, the closest matches are What Would You Choose? Rather, Who Wants to Be a Millionaire: 2nd Edition, Pokémon Añil, Takamori Puzzle and Quiz.com. All 10 share its quiz/trivia genre and are ranked by how closely their themes and modes overlap.
