A science fiction (sci-fi) game is a genre of video game that is set in a futuristic or speculative fictional universe that often incorporates advanced technology, space exploration, futuristic concepts, and imaginative scenarios. Examples of sci-fi games include "Mass Effect," which combines space exploration with deep character interactions; "Deus Ex," a cyberpunk-themed game with advanced augmentations; "Halo," a series set in a futuristic universe with alien conflicts; and "Portal," a puzzle game that involves teleportation technology. Sci-fi games appeal to players who are intrigued by imaginative futures, technological advancements, and exploring the "what if" scenarios that come with pushing the boundaries of science and technology.