Pokemon Ultra Sun and Pokemon Ultra Moon are role-playing video games developed by Game Freak, published by The Pokemon Company, and distributed by Nintendo for Nintendo 3DS. The paired games were released worldwide on 17 November 2017. Announced in June 2017, the titles are enhanced versions of Pokemon Sun and Moon with a modified storyline, similar to previous "upper versions" like Yellow, Crystal, Emerald, and Platinum. The games are the second installments in the seventh generation and the last planned installment of the main series Pokemon games for Nintendo 3DS.

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To answer this question, we should know that: Announced in June 2017, the titles are enhanced versions of Pokemon Sun and Moon with a modified storyline, similar to previous "upper versions" like Yellow, Crystal, Emerald, and Platinum. So, the answer is enhanced versions of Pokemon Sun and Moon with a modified storyline.