Tired of shooting at zombies? Here are worthwhile games with aliens to fill up your time with out-of-this world adventures.

XCOM: Enemy Unknown (2012)

Considered a reboot of the X-COM series and UFO: Enemy Unknown game, the player must fight through hordes of alien invaders with the help of a paramilitary organization in a turn-based gameplay.

Doom (1993)

Considered one of the classic first-person shooter games of all time, Doom lets you fight through nine levels of a military base on Mars against demons by controlling a space marine. You can also play the 2016 remake of the game for modern graphics.

Metroid (1986)

The first installment of the series introduces Samus Aran who is tasked of finding the Metroid creatures that were previously stolen. Samus is on the planet Zebes to look for the Space Pirates.

Contra III: The Alien Wars (1992)

If you have played the previous two installments, this title features a full-scale invasion of the same aliens that were supposedly defeated.

Oddworld (1997)

The title is derived from the planet on which the game is set. The planet is known to possess the opposite qualities of Earth given that it is from another dimension. The goal of the player is to defend its inhabitants from industrial corporations that are corrupting the planet.

Prey (2006)

Do you like stories of alien abduction? This game introduces one of the victims who was abducted by aliens. Tommy has found an ally aboard the alien ship and learns that there are inhabitants who are moving against the starship. There is also another game of the same title which is unrelated to this game, but also features aliens.

Dead Space (2008)

Players control Isaac Clarke in a mission to investigate a starship. Isaac learns that its crew was attacked by monsters and that they too will soon need rescuing.

Alien: Isolation (2014)

If you enjoyed the movie Alien, then you have to play this game which is set 15 years after the events of the movie.

Half-Life (1998)

Dr. Gordon Freeman was part of a team at a research facility who witnessed an opening to another dimension. The rift causes hostile creatures to cross into our world and prompts the government to issue a coverup that would also mean killing all the survivors.

Resistance: Fall of Man (2006)

In alternate history of 1951, an alien invasion rocks the world. These creatures increase their forces by infecting humans to force them to evolve into grotesque insect-like soldiers.

Quake II (1997)

The player is introduced to a marine named Bitterman who is part of a resistance force against an alien invasion. The plan is to attack the home planet of the aliens to prevent that invasion.

StarCraft (1998)

A three-way war between star-faring species in the Milky Way is the theme of the game. The humans or Terrans must firght for territory and control against the Protoss and the Zerg in this real-time strategy game.

Perfect Dark (2000)

This first-person shooter is set in 2023 at the height of an interstellar war between to alien races. The humans have somehow found a way to bring politics into play by favoring one faction over the other.

Mass Effect (2007)

Commander Shepard is sent to recover an ancient artifact in a human colony when they receive a warning of an attack. Finding out the mystery of the attackers and their connection to the artifact unlocks another mystery that involves a cycle of destruction and the existence of a mythical race.