Crash on Planet X world illustration - Science Fiction theme
Science Fiction

Crash on Planet X

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maxtyl

Your ship has crash-landed on an uncharted planet. There are no signs of civilization—only an endless, hostile wilderness teeming with lifeforms that don’t fear you, they hunt you. The atmosphere is barely breathable, storms rage unpredictably, and the native ecosystem is as beautiful as it is lethal. No backup, no escape route. You must survive with what’s left of your ship, scavenging and adapting to a world that does not want you here.


Author's Note: - Genre: Hardcore Survival Horror / Sci-Fi Wilderness Exploration - Atmosphere: Vast, oppressive, alien. The planet is untouched by civilization. Towering predatory flora, violent weather patterns, and a hyper-adaptive food chain. - Visual Style: Alien jungles with bioluminescent canopies, bone-dry canyons filled with toxic fog, oceans of liquid methane, and insect-like hives built into natural rock formations. - Tone: Gritty, realistic survival. The planet is indifferent to human presence. There are no ancient ruins, no intelligent species—only an ecosystem that reacts aggressively to intruders. - Creatures: Entirely original fauna. Predators are designed based on real-world extreme survival adaptations (camouflage, ambush predators, swarm tactics). Avoid humanoid enemies. Emphasize *alien biology* (multi-limbed, eyeless, hive-mind behaviors, etc.). - Environmental Threats: Acid rain, magnetic storms, tectonic shifts, suffocating fungal spores, parasites. The environment itself is an active threat. - Story Loop: Players must scavenge shipwreck debris, build makeshift shelters, craft survival tools, and explore for essential resources (water, breathable air, power cells). - Escalation: As players venture further, the ecosystem reacts to them. Predators track them across distances, migration patterns are disrupted, and their mere presence causes ecological ripples. - Opening Scene: Players regain consciousness in the wreckage, alarms blaring. Hull breaches expose them to a toxic atmosphere. Supplies are minimal, and night is approaching fast. - Dialogue Tone: Tense, minimalistic, survival-focused. The ship’s AI may be fragmented or offline. Communication is through raw data feeds or glitchy interfaces. - Thematic Focus: Isolation, resourcefulness, and the overwhelming indifference of nature.
Played5 times
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Created
3 days ago
Last Updated
Yesterday
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Spine-Crawler
CR 5Large Beast
Spine-Crawler
HP Range40 - 80 (Avg: 60)
AC16
XP1800

Description

A large insectoid predator with a crab-like exoskeleton and sharp segmented legs. It stalks prey silently and ambushes from burrows or under wreckage, using retractable bone spines on its back.

Details
SizeLarge
TypeBeast
CR5
XP1800
LanguagesNone
Defenses
Armor Class16
HP Range40 - 80 (Avg: 60)
Damage VulnerabilitiesNone
Damage ResistancesNone
Damage ImmunitiesNone
Condition ImmunitiesNone
Actions

Burrow Ambush

While underground, the Spine-Crawler can erupt beneath a target within 10 feet, forcing a DC 15 Dexterity saving throw or be knocked prone and take 2d10 bludgeoning damage.

Lunge Attack

The Spine-Crawler lunges forward with its sharp legs to make a melee attack dealing 2d10 slashing damage. If the target manages to flip the Spine-Crawler, its soft underbelly is exposed, granting advantage on attacks until it rights itself.

Spine Volley

The Spine-Crawler fires a barrage of 3 toxic bone spines at targets within 30 feet. Each spine deals 1d8 piercing damage plus 1d6 poison damage.

This work includes material taken from the System Reference Document 5.1 (“SRD 5.1”) by Wizards of the Coast LLC . The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License.
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