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    Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS. These structures provide many functions, the most important being spawning. The designated builders must ensure there are spawn structures or other players will not be able to rejoin the game after death. Other structures provide automated base defense (to some degree), healing functions and much more...

    Player advancement is different depending on which team you are on. As a human, players are rewarded with credits for each alien kill. These credits may be used to purchase new weapons and upgrades from the "Armoury". The alien team advances quite differently. Upon killing a human foe, the alien is able to evolve into a new class. The more kills gained the more powerful the classes available.

    The overall objective behind Tremulous is to eliminate the opposing team. This is achieved by not only killing the opposing players but also removing their ability to respawn by destroying their spawn structures.

    Feature List

    • Flexible particle system - 99% of the in-game visual effects are configured using particle scripts.
    • 16 buildable structures with in-game functions.
    • Play as several alien classes with unique abilities.
    • Customize your setup as a human and buy new weapons, armour and items.
    • Scale the walls and ceilings as an alien waiting for an unsuspecting human.
    • Realistic physics and motion - no bunny hopping or quick back peddling.
    • Flexible map system - animated mapobjects, triggering, light flares, etc.
    • Large weapons system - don't like the weapon you have? Sell it and buy a different one, dozens of options.


    If you want to know how to properly play Tremulous, you'll need to look at the manual.

    The Visit

    Haos Redro Corporation
    Titan Moon

    Ked stood quietly in the reception area, arms crossed over his black document case. He stared down the corridor to his left looking deep into the reflections on the black obsidian floor. Decadent. The stone was imported from Hedron - transport costs alone were above 10 million credits. Lives were most definately lost mining in the turbulent conditions of the 12 year new planet. Your life for this floor. We can walk on you...

    All elements and construction in this building were designed with a sense of authority - an over bodding dominance of man. The towering crystalline entrance pillars reduce anyone of stature into a meer blemish of shadow on the black floors. That was intentional. If you're diminished in presentation you stand no chance of gaining leverage with one of the most powerful corporations in the known universe.

    The small green sign above office doors flashed on. ENTER. The slide doors swooshed open revealing a brightly lit short corridor. Ked cleared his throat nervously. He felt a quick flush of perspiration on his palms. The sign pulsed again. Ked's lip twitched as he stepped beyond the threshold with an uneasy weight, his legs feeling heavy.


    Once inside the lighted corridor, the open end closed shut on Ked. The hum of the lights came into the foreground then broken by the far end door sliding open. Ked approached the end and peered into the cavernous office space. The office was a large semi-circled room with exterior windows made from transparent fiber steel. The soft blue light off Titan's surface covered half the floor in shadow. Freightliners could be seen carbing their engines just beyond the assemblage docks. Their massive forms moving dangerously close to the riggings. Ked stepped out of the corridor realizing that he had been frozen for a moment too long. His gaze moved around the room again finding the centerpiece of the office. A large slab of borewood replete with red moldings of synthium. Another symbol of decadence. Behind the desk sat a motionless figure, face cast in light from the display inlayed in the desk. Ked walked forward, stuffing his apprehension deep inside, suppressing his need to get out of there.


    "Ked Ambrit" The voice was old and stern. Ked diverted his eyes away from the man in nervous distraction. A scoutliner arced across the horizon past the panel on the left. Caught in a timeless stare Ked whipped his gaze back towards the man. His heart was pounding.


    "Yes sir." His voice was dry. He forced himself to salivate but still felt dry and acrid in his throat. The man behind the desk outstretched a dark slender hand, pushing a tight folder of sheets across the desk. The folder came into light before Ked.

    "As you know Haos Redro has been recently expanding properties into the Brindus system." His voice was affected, a result of being surrounded by abundant wealth his whole life.

    "I am aware." Ked spoke quickly to avoid cutting off a sentence.
    "These 'properties' , if developed, have the ability to make Haos Redro one of the most powerful entities in the universe." He paused.
    Ked interjected, "Excellent sir."
    "Indeed it is excellent Ked, if it were not for some recent...concerns." The last word he spoke had an intentional inflection of importance. It wasn't a small problem, this was a concern.
    "You've most likely read the shipping reports from last quarter." "Yes" Ked answered sternly.
    "We lost 12 heavy cargo liners outside the Fractal Zion system."
    "How did we lose them sir? I only remember seeing them listed in the loss report but not actually noted." Ked had done his homework.
    "Ked, we encountered a lifeform not of our homeworld nor of any other homeworld. This 'lifeform' spreads like a virus. It killed the crew of all 12 ships. A few of our mining outposts are reporting alien activity was well."

    Ked stood stunned. Humans had certainly come into alien contact before but it had only been through micro organisms and plant life. This was new and extraordinary.

    "We don't know their origins, we don't even know the extent of their strength or weaknesses. We do know we have to eliminate this threat to the corporation. I'm putting you in control of this situation Ked. You will have to allocate resources for a militia patrol. The folder before you contains contacts for employing mercenaries and equipment."
    "Right away sir." Ked spoke with authority. The feeling of dread was gone from his body now. Ked would keep his job.
    "One more thing Ked." The oldman was sly.
    "You will be on the next ship to the Fractal Zion as soon as you've assembled forces."

    The feeling of dread was back.

    Open Source

    Tremulous is open source, licensed under the GPL. Tremulous is open source because we believe that the source code should be made available to the public, along with the binaries. The primary reason behind this is to allow other developers to utilise sections of this code in their own works, should it be useful to them. It should be noted however, that using the source requires your work to also be covered by the GPL and hence be open source itself.

    Contributed by tarmo888 (5378) on Jun 12, 2006.