Most Similar Movies to Sphere (1998)
If you are looking for movies like Sphere (1998), you might like movies tagged with keyword : psychologist, astrophysicist, mathematician, soldier, alien, chilling, disturbing, suspenseful, underwater, ocean floor, spaceship, submarine, pacific ocean, extraterrestrial life, time travel, memories, investigation, mind control, subconscious, mystery, pursuit, escape, future .
The Abyss (1989), Leviathan (1989), Lifeforce (1985), Dreamcatcher (2003), Battleship (2012), AVP: Alien vs. Predator (2004), Contact (1997) ... Let's take a look at the following list...

The Abyss (1989)
A civilian diving team is enlisted to search for a lost nuclear submarine and face danger while encountering an alien aquatic species.
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Leviathan (1989)
An American deep-sea mining colony stumbles upon a sunken Soviet vessel hiding a horrific secret.
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Lifeforce (1985)
A race of space vampires arrives in London and infects the populace, beginning an apocalyptic descent into chaos.
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Dreamcatcher (2003)
Friends on a camping trip discover that the town they're vacationing in is being plagued in an unusual fashion by parasitic aliens from outer space.
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Battleship (2012)
A fleet of ships is forced to do battle with an armada of unknown origins in order to discover and thwart their destructive goals.
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AVP: Alien vs. Predator (2004)
During an archaeological expedition on Bouvetøya Island in Antarctica, a team of archaeologists and other scientists find themselves caught up in a battle between the two legends. Soon, the team realize that only one species can win.
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Contact (1997)
Dr. Ellie Arroway (Jodie Foster), after years of searching, finds conclusive radio proof of extraterrestrial intelligence, sending plans for a mysterious machine.
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Village of the Damned (1995)
A small town's women give birth to unfriendly alien children posing as humans.
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Aliens (1986)
Ellen Ripley is rescued by a deep salvage team after being in hypersleep for 57 years. The moon that the Nostromo visited has been colonized, but contact is lost. This time, colonial marines have impressive firepower, but will that be enough?
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Predator (1987)
A team of commandos on a mission in a Central American jungle find themselves hunted by an extraterrestrial warrior.
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Virus (1999)
When the crew of an American tugboat boards an abandoned Russian research vessel, the alien life form aboard regards them as a virus which must be destroyed.
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AVPR: Aliens vs Predator - Requiem (2007)
Warring Alien and Predator races descend on a rural Colorado town, where unsuspecting residents must band together for any chance of survival.
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The X Files (1998)
Mulder and Scully must fight the government in a conspiracy and find the truth about an alien colonization of Earth.
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Area 51 (2015)
Three young conspiracy theorists attempt to uncover the mysteries of Area 51, the government's secret location rumored to have hosted encounters with alien beings. What they find at this hidden facility exposes unimaginable secrets.
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My Stepmother Is an Alien (1988)
A creature from another planet tries to seduce a shy Earth physicist to gain control over his researches. The result of this important mission much exceeded her expectations.
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Star Trek: Insurrection (1998)
When the crew of the Enterprise learn of a Federation conspiracy against the inhabitants of a unique planet, Captain Picard begins an open rebellion.
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Predators (2010)
A group of elite warriors parachute into an unfamiliar jungle and are hunted by members of a merciless alien race.
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The Thing (1982)
A research team in Antarctica is hunted by a shape-shifting alien that assumes the appearance of its victims.
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