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- "Third planet of the Sol system. Home to a significant variety of species, including Homo sapiens. Core of the human interstellar civiilzation. Evidence suggests visitation by advanced alien species in the distant past."
- ―Serious Sam VR: The Last Hope description[src]
Earth is the third planet of the Solar System, and the homeworld of the human race. It is orbited by its only natural satellite, the Moon. The planet is of certain interest to many extraterrestrial species, such as the Sirians, who had a profound impact on humanity.[1][2] Earth was subjected to several invasions by Mental and his alien armies throughout multiple time periods.
History[]
The Sirians discover Earth[]

Humans excavating the Time-Lock.
Thousands of years ago, during the ancient Egypt era, the Sirians, an advanced extraterrestrial race, discovered Earth during their interstellar travels and took interest in the planet. They sent out a scouting party, who landed in Egypt. Upon arrival, the Sirians established contact with the humans and began interacting with them. The Egyptians, astounded by the Sirians and their advanced technology, worshiped them as gods, and the Sirians immmediately took advantage of this; they began creating powerful plasma generators and other machines underground, while the Egyptians prospered and began what would be known as the Egyptian Empire.[3] Thanks to the Sirians, the Egyptian Empire flourished, at least for a while.
Around this time, Mental, the last member of an ancient and powerful race known as the Hum-Tah, discovered the planet Sirius, the Sirians' homeworld, and had his forces invade and take over the planet. This led to the near-annihilation of the Sirians, but some of them were able to go into hiding before they were killed. The survivors contacted the members on Earth before they met their demise. They told the Sirians on Earth to stay put and to not return to Sirius so that Mental could not detect them. That way, the species still had a chance. The Sirians on Earth complied, but received something unusual from Sirius; a strange device called the Time-Lock, which would allow someone to travel back in time to a certain location and designated time period.[4] This was to prevent Mental from obtaining it and using it for his own evil purposes.
The remaining Sirians on Earth began dipping into madness and depression because the rest of their species was gone. During these last few years, the Sirians disabled the main method to summon their spaceship, the SSS Centerprice, so that it couldn't be exploited by the Egyptians after the Sirians died. However, in case of an emergency, they created a backdoor involving elemental statues and some of the biggest cities in ancient Egypt. Clues to this were hidden throughout old Egyptian texts and riddles in order to prevent any one person from piecing it together.[5]
The last few decided to put everything they had in one crypt, in order to help the humans explore the galaxy when they were more advanced and to warn them about Chaad-Sheen. Everything, such as the location of the SSS Centerprice and what they knew about the galaxy, were buried in that crypt. One of their last acts was to activate the Time-Lock and arm it to the time they lived in in case someone like the humans needed it for some reason.[4]
Present day[]
Two millennia later, in the year 2060 AD, humans had made an astounding discovery, and excavated the Time-Lock, which, compared to the other places in ancient Egypt, had remained relatively preserved.[6] Humans strongly believed that this device was of extraterrestrial origin and couldn't have been made by the ancient Egyptians. In order to better understand its purpose, they find some clues and old riddles hidden in hieroglpyhs in order to decipher them. They hoped that, once the machine has been activated, they believed it would give humanity a fighting chance against Mental.
Several decades later, in the early 2100s, mankind becomes advanced to enough reach interstellar travel, after reverse-engineering abandoned Sirian technology. Humanity prospered, and had started establishing human colonies into the far reaches of space. At some point, an exploratory vessel, the Surveyor, had come across an asteroid field orbiting the remains of Sirius, at which Mental had awoken from dormancy and began attacking the human colonies. The colonies fell, with the survivors retreating back to Earth, which was humanity's last stronghold.[7]
Around this time, the military forces on Earth had merged into one larger army, the Earth Defense Force, to protect their planet from Mental's invading forces and would do anything to ensure the survival of mankind and its beloved planet.
Appearances[]
Serious Sam 1[]
Earth is present in this timeline due to the events of the planet's destruction not having taken place yet, which gives Sam another opportunity to save it. After the events of Serious Sam: The Second Encounter, the fate of Earth is not known, but Sam was able to save it this time and eliminate any presence of Mental's forces on the planet.
Serious Sam 3: BFE[]

After the Tunguksa Offensive, Mental gets his revenge on humanity by deploying a large fleet of warships.
About a year Mental's defeat at the hands of the Earth Defense Force after the Tunguska Offensive, Mental decided to attack Earth directly by sending in a large invasion force with dozens, if not hundreds of Alcor Class Warships at his disposal. Opting for a scorched-earth campaign to ensure the humans' defeat, Mental had the warships lay siege to Earth's cities, causing severe infrastructural damage by leveling buildings with their scorcher beams, while Mental's troops on the ground disposed of any people who were lucky enough to survive the mass destruction caused by the warships.[6]
Within a year, humankind was brought to the brink of extinction. The already exhausted EDF lost many of their soldiers to Mental's hordes, and their supplies were dwindling. Desperate for a solution, world leaders turned to the Time-Lock, a mysterious device that had been excavated decades prior. They believed that this relic from a long-forgotten race could aid in humanity's survival.[6] Meanwhile, the EDF thought best to lay low and deploy personnel and soldiers on covert missions to avoid being detected by Mental's forces as much as possible. Additionally, they decided to not fight Mental's forces directly, but instead came up with a plan that would involve using the Time-Lock. Using this machine, they would send someone or a group of highly trained soldiers into the past to assassinate Mental and change the future.
Unfortunately for the EDF, they were unable to figure out how to activate the Time-Lock, since it laid dormant. Luckily, Sam Stone, one of the EDF's best men, was able to activate two plasma generators underneath Karnak and Luxor, which activated the Time-Lock. Doing this, however, caught the attention of Mental, and he planned to rid himself of the last remnants of the Earth Defense Force by having his forces attack their base. The attack was a success, and the destruction of the EDF's last headquarters and Charlie Team going missing signaled the end of the EDF and destroyed humanity's last hope.
However, since Sam was still the only one left to see the mission through to the end, this still gave humanity a fighting chance. He fought his way to the Time-Lock and wiped out every single one of Mental's troops that stood in his way. There, he encountered Ugh-Zan VI, who attempts to stop Sam, but he is able to kill him and make his way into the Time-Lock just as soon as Mental sends the Moon crashing into the Earth. With the planet's destruction at the hands of Mental, in this timeline, this signalled the end of the Mental War on Earth and whatever remained of the human race.
Serious Sam's Bogus Detour[]
Taking place in the same timeline as Serious Sam: The First Encounter, Earth becomes the interest of a planetary mining company known as Mental-Altani, who discovered Earth and its rich variety of life.[8] With the planet threatened by Mental's forces once again, Sam decides to take action and remove all traces of the company's operations from Earth. Upon discovering Earth, Mental-Altani established a military base on the Moon and sent their troops down to Earth with the use of portals. Having sided with Mental, the corporation's primary mission is to go from one planet to another, experimenting with the toxic ooze on the local flora and fauna. If the experiments are not satisfactory enough, they will destroy the planet with the use of Interplanetary Renewal Devices, which are laden with bacteria that consume all matter in their path.
While experimenting with the ooze on Earth, the company began wrecking havoc on the planet's fragile ecosystems, causing pollution and enviromental destruction on a massive scale. Some of the local wildlife became exposed to the ooze, turning ordinary plants into carnivorous mutants and even causing animals to rapidly evolve and gain sapience. Most of this destruction occurred in Greece, Turkey, and parts of northern Egypt. Ironically, the wildlife that became mutated developed extreme hostility to any non-infected life and even Mental-Altani.
After Sam ends up on the Moon base, he is successful in neutralizing the portal and destroying the base before the corporation can destroy Earth with the warheads, saving the planet once again from certain doom.
Serious Sam 4 and Serious Sam: Siberian Mayhem[]

A large alien portal suddenly opens up in Tunguska, Russia.
Shortly after the Mental War, the EDF are forced to retreat back to Earth after losing the human colonies in space, which were taken over by Mental's forces and the Octanians, an alien race who have allied themselves with Mental. Mental is able to track the humans down, and a massive alien portal suddenly opens up in Tunguska, which serves as a bridgehead for Mental's forces to invade Earth and initiates the Tunguska Offensive.[9] The EDF scramble to repel the threat, while two smaller portals are established in Italy and France. One of Mental's servants, Lord Achriman is set up in charge of the campaign on Earth and to ensure that the invasion is a success.
Notable locations[]
Egypt[]
- Main article: Egypt
Most of the events in the Serious Sam series take place in Egypt. The many locations here include Abu Simbel, Alexandria, Cairo, Giza, Karnak, Luxor, Memphis, Philae, and Thebes.
France[]
A major location in Serious Sam 4, Sam and the Alien Artifact Acquisition team went to France after learning that the Holy Grail was actually located there and not in Italy. After parachuting down into the countryside, they eventually meet up with each other in the fortfied city of Carcassonne.
Greece[]
This is the location of the portal that the Mental-Altani corporation placed on top of Mount Olympus to send Mental's forces to Earth. Sam makes his way to Greece by stealing a multi-mission aircraft, where he plans to thwart Mental-Altani's objectives.
Iran[]
This is the location where the city of Persepolis is set during the height of the Achaemenid Empire in Serious Sam: The Second Encounter.
Italy[]
A country in Southern and Western Europe and the location of many cities, such as Pompeii and Rome. In Serious Sam 4, the Alien Artifact Acquisition team visited Rome to meet up with Father Mikhail, a Russian priest who could help them find the location of the Holy Grail. The A.A.A. team also went to Pompeii to place beacons to activate the HAARP satellite which was used to erupt Mount Vesuvius.
Mexico[]
Two locations in The Second Encounter are set in Mexico, during the pre-Columbian era. Notable locations include Palenque and the ancient Mayan city of Teotihuacan.
Nova Scotia[]
A region in Canada that Sam briefly visits in Serious Sam: Double D during the Jurassic period when he travels back in time after destroying the crystal beacon in Egypt.
Poland[]
A country located in Central Europe, Poland is the location that Sam arrives in upon entering the time portal in Mesopotamia. Here, he ends up in Krwawitze, a quiet medieval town that held an important item that Sam needed to finish his mission.
Russia[]
The location of the Tunguska Offensive launched by the Earth Defense Force to neutralize the portal set up by Mental's forces.
Siberia[]
- Main article: Siberia
A large region in Russia visited by Sam where he has to make his way to the portal to stop Brand from giving the Holy Grail to Mental. It was mostly a large, sparsely populated wilderness that succumbed to harsh winters and heavy blizzards. A few villages and small towns could be found far and between.
Turkey[]
A country located in Eastern Europe, near the Mediterranean Sea. During the events of Serious Sam's Bogus Detour, Sam visited the city of Troy in this location to search for the missing parts for a multi-mission aircraft so he could use it to fly to Greece.
Gallery[]
Serious Sam 1[]
Serious Sam 3: BFE[]
Serious Sam VR: The Last Hope[]
List of appearances[]
- Serious Sam: The First Encounter (First appearance)
- Serious Sam: The Second Encounter
- Serious Sam: Xbox (non-canonical appearance)
- Serious Sam: Next Encounter (non-canonical appearance)
- Serious Sam Advance (non-canonical appearance)
- Serious Sam HD: The First Encounter
- Serious Sam HD: The Second Encounter
- Serious Sam: Double D (non-canonical appearance)
- Serious Sam: Kamikaze Attack! (non-canonical appearance)
- Serious Sam: The Random Encounter (non-canonical appearance)
- Serious Sam 3: BFE
- Serious Sam: The Greek Encounter (non-canonical appearance)
- Serious Sam: Double D: XXL (non-canonical appearance)
- Serious Sam VR: The First Encounter
- Serious Sam VR: The Second Encounter
- Serious Sam VR: The Last Hope
- Serious Sam 3 VR: BFE
- Serious Sam's Bogus Detour (non-canonical appearance)
- I Hate Running Backwards (non-canonical appearance)
- Serious Sam: Tormental (non-canonical appearance)
- Serious Sam Classics: Revolution (non-canonical appearance)
- Serious Sam 4
- Serious Sam: Siberian Mayhem
References[]
- ↑ Serious Sam: The First Encounter
- ↑ Serious Sam 3: BFE opening narrative
- ↑ Serious Sam: The First Encounter - NETRICSA Strategy - Sirian Pictograms
- ↑ 4.0 4.1
Croteam official website (Archived)
- ↑ Serious Sam: The First Encounter - NETRICSA - Strategy - Temple of Hatshepsut
- ↑ 6.0 6.1 6.2 Serious Sam 3: BFE opening cutscene
- ↑ Serious Sam: The First Encounter opening prologue
- ↑ Mental-Altani NETRICSA description
- ↑ Serious Sam 4
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