The absence of "Half-Life 3" is felt by fans of first-person sci-fi gaming, but there are alternative titles that capture similar gameplay experiences.
"System Shock 2," released in 1999, is set aboard a starship in the 22nd century where players awaken from cryogenic sleep to find the crew transformed by alien parasites, featuring a partnership with the AI SHODAN. A remaster was released in 2025.
"Deus Ex," launched in 2000, places players in a dystopian future as JC Denton, a cybernetically enhanced agent navigating conspiracies and making choices that affect humanity's future.
"Quake 4," released in 2005, is a sequel to "Quake II," where players control Matthew Kane during an invasion of the Strogg home planet, focusing on single-player storytelling and refined gameplay.
"Crysis," released in 2007, is set in 2020, where a Delta Force unit investigates an archaeological discovery and faces aliens and North Korean forces, emphasizing action and an engaging storyline. A remaster was released in 2020.
"Metro 2033," based on Dmitry Glukhovsky's novel, immerses players in post-apocalyptic Moscow, where survivors live in the subway system and face hostile factions and mutated creatures, presenting a survival horror experience.