ELEMENT × EXTREMOPHILE

Complete Organism Database — 120 Cards · Base Set v1.0
C Common (12/suit)
U Uncommon (10/suit)
R Rare (5/suit)
L Legendary (3/suit)
Strict Anaerobe
Aerobic
Facultative
Microaerophilic
⚡ = Energy Yield (BP/turn)

🔴 PYRO — Thermophiles "The Forge" (30 cards)

Passive — Heat Shield: Ignore temperature increases from events.  |  Mechanic — Thermal Gradient Bonus: +1 BP/turn per additional zone at different temperature ranges (3+ zones).

Common (PY-C-001 to PY-C-012)

IDName / SpeciesRarityMetabolismTempO₂Special / Notes
PY-C-001Thermophilic Fermenter
Thermotoga maritima
CSugars → H₂ + acetate (fermentation)155–90°CAnaerobeKey H₂ producer for methanogens in deep zones
PY-C-002Sulfur-Reducing Thermophile
Thermodesulfobacterium
CH₂ + S⁰ → H₂S265–85°CAnaerobeCommon deep vent organism; produces H₂S (pairs with sulfur oxidizers)
PY-C-003Thermoacidophile
Sulfolobus acidocaldarius
CS⁰ → SO₄²⁻ (aerobic oxidation)260–95°C, pH 1–4AerobicRare aerobic thermophile; drops zone pH as it oxidizes
PY-C-004Hot Spring Methanogen
Methanothermobacter
CCO₂ + H₂ → CH₄155–70°CAnaerobeObligate H₂ consumer; core of The Methanogenic Couple syntrophy
PY-C-005Hyperthermophilic Archaeon
Pyrococcus furiosus
CPeptide fermentation + facultative S⁰ reduction270–103°CAnaerobeFacultative S⁰ — versatile deep zone operator; tungsten-enzyme host
PY-C-006Vent Chimney Colonizer
Methanocaldococcus jannaschii
CCO₂ + H₂ → CH₄148–94°CAnaerobeFirst hyperthermophile genome sequenced; model organism for deep vents
PY-C-007Shallow Vent Microbe
Thermococcus sp.
CPeptide fermentation → H₂160–93°CAnaerobeUniversal H₂ donor; feeds methanogens and acetogens
PY-C-008Hot Spring Mat Former
Thermus aquaticus
CAerobic heterotroph250–80°CAerobicSource of Taq polymerase — the enzyme behind all PCR. Historical flavor text.
PY-C-009Volcanic Soil Bacterium
Geobacillus stearothermophilus
CAerobic/facultative heterotroph230–75°CFacultativeEndospore former — survives 1 destructive Event per game
PY-C-010Deep Vent Sulfate Reducer
Archaeoglobus fulgidus
CSO₄²⁻ + H₂ → H₂S260–95°CAnaerobeProduces iron sulfide precipitates; inhabits hydrothermal systems
PY-C-011Thermophilic Iron Reducer
Geothermobacterium ferrireducens
CFe³⁺ + H₂ → Fe²⁺265–100°CAnaerobeLinks iron cycle and thermal zones; pairs with iron oxidizers for cycle bonus
PY-C-012Shallow Hot Spring Cyanobacterium
Thermosynechococcus elongatus
COxygenic photosynthesis345–70°CAerobicRare: thermophilic phototroph. Cross-suit feel. Requires light.

Uncommon (PY-U-001 to PY-U-010)

IDName / SpeciesRarityMetabolismTempO₂Special
PY-U-001Black Smoker Archaea
Pyrolobus fumarii
UNO₃⁻ + H₂ → N₂ (denitrification)290–113°CAnaerobeGrows at 113°C — immune to ALL non-extreme temperature events
PY-U-002Serpentinite Methanogen
Methanosarcinales (deep)
UAcetoclastic OR hydrogenotrophic methanogenesis250–80°CAnaerobeCan use acetate OR H₂ — unusual metabolic versatility for methanogens
PY-U-003Thermophilic Syntrophic Partner
Syntrophothermus lipocalidus
UFatty acid → H₂ + acetate150–60°CAnaerobeMUST PAIR WITH METHANOGEN — unfavorable alone (ΔG = +76 kJ/mol)
PY-U-004Deep Bore Fermenter
Thermosipho sp.
UPeptide/carbohydrate → H₂ + CO₂ + acetate150–75°CAnaerobeProduces H₂, CO₂, and acetate — feeds three different syntrophic partners simultaneously
PY-U-005Volcanic Nitrogen Fixer
Thermocrinis sp.
UN₂ fixation + H₂ oxidation255–80°CMicroaerophileRare thermophilic N-fixer — closes nitrogen cycle in hot environments
PY-U-006Acid Hot Pool Alga
Galdieria sulphuraria
UPhotosynthesis (eukaryote)345–56°C, pH 0–4AerobicDual suit (also in Halo). pH 0–4 + high heat = polyextremophile phototroph.
PY-U-007Deep-Sea Vent Consortium
Mixed community
UCombined syntrophic mat metabolism450–100°CAnaerobeCannot be separated — always scores as a unit. Pre-linked consortium card.
PY-U-008Thermophilic Ammonia Oxidizer
Nitrosocaldus sp.
UNH₃ → NO₂⁻255–70°CAerobicCloses nitrogen cycle in hot springs; pairs with PY-U-001 for complete nitrification
PY-U-009Hydrothermal Mn Reducer
Thermus sp. (Mn-reducing)
UMnO₂ + organic C → Mn²⁺250–75°CAnaerobeManganese reduction in hot springs — pairs with Mn oxidizers for cycle bonus
PY-U-010Subseafloor Acetogen
Moorella thermoacetica
UCO₂ + H₂ → acetate (Wood-Ljungdahl)140–65°CAnaerobeAlternative to methanogenesis; produces acetate (carbon) instead of methane (waste)

Rare & Legendary (PY-R / PY-L)

IDName / SpeciesRarityMetabolismTempSpecial Ability
PY-R-001The Highest Temperature Life
Methanopyrus kandleri
RCO₂ + H₂ → CH₄284–122°CGrows at 122°C — autoclave temperature. Immune to ALL temperature events.
PY-R-002Iron-Sulfide Chimney Builder
Pyrite-precipitating consortium
RFe²⁺ + H₂S → FeS₂ (pyrite) + energy360–100°CCreates physical structure — zone gains +1 Event resistance permanently
PY-R-003Radiolysis-Powered Thermophile
Deep subsurface archaeon
RH₂ (from water radiolysis) → energy250–90°CFunctions in zones with Radiation tokens. No surface connection needed. Real deep biosphere metabolism.
PY-R-004Anoxygenic Phototroph (Thermal)
Chloroflexus aurantiacus
RAnoxygenic photosynthesis (no O₂ produced)345–75°CCan photosynthesize without poisoning anaerobes. Facultative: grows in dark as heterotroph (1 BP).
PY-R-005Thermal Gradient Consortium
Multi-organism card
RSpans 2 adjacent zones (different temperatures)4Any two adjacent zonesMust be placed across a zone boundary. Scores in BOTH zones simultaneously.
PY-L-001Strain 121
Geogemma barossii
LIron reduction at 121°C3ALL zonesDeploy in ANY zone regardless of temperature. Zone becomes inhospitable to non-Pyro organisms for 2 turns.
PY-L-002LUCA's Shadow
Hypothetical ancestor
LFermentation OR methanogenesis OR S reduction OR Fe reduction (switch freely)1 each40–90°CChooses ONE metabolism per Metabolize Phase. Switchable each turn. Models metabolic flexibility of early life.
PY-L-003Magma Interface Archaea
Theoretical deep-core organism
LFe³⁺ reduction at extreme pressure/temperature4>300°CThe ONLY organism that can be deployed in Zone 6 (Core Interface) in Project AXIS.

⚙️ LITHO — Chemolithotrophs "The Foundation" (30 cards)

Passive — Rock Eaters: Can extract resources from zones with 0 organic carbon.  |  Mechanic — Electron Shuttle: Pass electron tokens to adjacent zones at no action cost.

Common (LI-C-001 to LI-C-012)

IDName / SpeciesRarityMetabolismTemp / pHO₂Notes
LI-C-001Iron Oxidizer
Acidithiobacillus ferrooxidans
CFe²⁺ → Fe³⁺ (aerobic)210–37°C, pH 1.5–3.5AerobicClassic acid mine drainage organism. Pairs with iron reducer for +5 BP cycle.
LI-C-002Iron Reducer
Geobacter sulfurreducens
CFe³⁺ + acetate → Fe²⁺215–35°C, pH 6–8AnaerobeElectrically conductive pili (nanowires). Pairs with iron oxidizer for cycle bonus.
LI-C-003Sulfur Oxidizer
Thiobacillus sp.
CH₂S → SO₄²⁻210–45°CAerobicProduces sulfuric acid — drops zone pH by 1 when active. Pairs with sulfate reducer.
LI-C-004Sulfate Reducer
Desulfovibrio vulgaris
CSO₄²⁻ + H₂ → H₂S215–40°C, pH 5–9AnaerobeUbiquitous. Produces H₂S. Pairs with sulfur oxidizer.
LI-C-005Ammonia Oxidizer
Nitrosomonas europaea
CNH₃ → NO₂⁻25–30°C, pH 7–8AerobicStep 1 of nitrification. PAIRS WITH LI-C-006 for Nitrification Team (+2 BP)
LI-C-006Nitrite Oxidizer
Nitrobacter winogradskyi
CNO₂⁻ → NO₃⁻15–40°C, pH 6–9AerobicStep 2 of nitrification. PAIRS WITH LI-C-005 for Nitrification Team (+2 BP)
LI-C-007Denitrifier
Pseudomonas stutzeri
CNO₃⁻ → N₂34–43°C, pH 6–9FacultativeReturns nitrogen to atmosphere. Closes N-cycle in AXIS mode.
LI-C-008Hydrogen Oxidizer
Hydrogenobacter thermophilus
CH₂ + O₂ → H₂O365–77°CAerobicClean energy — H₂ is the fuel, water is the waste. High-energy thermophile.
LI-C-009Manganese Oxidizer
Leptothrix discophora
CMn²⁺ → MnO₂215–30°C, pH 7–9AerobicCreates manganese oxide deposits. Pairs with Mn reducer for cycle bonus.
LI-C-010Manganese Reducer
Shewanella oneidensis
CMnO₂ → Mn²⁺ (also reduces Fe, U, Cr)24–35°C, pH 6–9FacultativeMetabolic jack-of-all-trades. Can reduce Mn, Fe, U, Cr — versatile electron acceptor range.
LI-C-011Arsenate Reducer
Chrysiogenes arsenatis
CAsO₄³⁻ → AsO₃³⁻ (respires arsenic)125–35°C, pH 7–8AnaerobeToxic to most organisms. Zone gains arsenic tolerance requirement when this is active.
LI-C-012Acetogen
Acetobacterium woodii
CCO₂ + H₂ → acetate (Wood-Ljungdahl pathway)120–35°C, pH 6–8AnaerobeProduces acetate as carbon currency. ΔG = -94.9 kJ/mol standard, -24.8 kJ/mol realistic.

Uncommon (LI-U-001 to LI-U-010)

IDName / SpeciesRarityMetabolismSpecial Ability
LI-U-001Electrogenic Bacterium
Geobacter metallireducens
UFe³⁺ reduction via conductive nanowires2ELECTRON SHUTTLE: can pass electron tokens to adjacent zones for free. This IS the Litho suit mechanic.
LI-U-002Perchlorate Reducer
Dechloromonas aromatica
UClO₄⁻ → Cl⁻ + O₂3Produces O₂ from perchlorate — critical for Mars scenarios where perchlorate is abundant. Can oxygenate anoxic zones.
LI-U-003Uranium Reducer
Geobacter uraniireducens
UU⁶⁺ → U⁴⁺ (immobilizes radioactive waste)2When in a zone with Radiation tokens, converts them to immobilized U⁴⁺ — removes the radiation hazard. Bioremediation application.
LI-U-004Anammox Bacterium
Kuenenia stuttgartiensis
UNH₄⁺ + NO₂⁻ → N₂ (anaerobic ammonia oxidation)2Completes the N-cycle anaerobically — shortcut requiring no O₂. Doubling time: 11 days (slowest growing bacterium in game by lore).
LI-U-005Deep Fracture Sulfidogen
Desulfotomaculum (deep)
USO₄²⁻ + H₂ → H₂S (deep subsurface)2Viable in deep Zones 4–5. Spore former: survives 1 destructive event.
LI-U-006Magnetotactic Bacterium
Magnetospirillum magnetotacticum
UMicroaerophilic Fe oxidation/reduction2Orients in magnetic fields. Immune to "orientation disruption" events. Produces magnetite crystals (magnetosome biomineralization).
LI-U-007Chromium Reducer
Shewanella (Cr-reducing)
UCr⁶⁺ → Cr³⁺2Detoxifies hexavalent chromium. Zone with Cr contamination: non-resistant organisms take Stress. This card is immune and scores normally.
LI-U-008Cave Biofilm Community
Mixed chemolithotrophs
UMulti-metabolism: Fe + Mn + S oxidation3Consortium card: counts as 3 organisms for diversity scoring. Always active in subsurface zones.
LI-U-009Serpentinite H₂ Consumer
Hydrogenothermus sp.
UH₂ + NO₃⁻ → N₂ + H₂O2Uses geologically-produced H₂ (serpentinization). Couples H₂ oxidation to denitrification — unique combination.
LI-U-010Methane Oxidizer (Aerobic)
Methylococcus capsulatus
UCH₄ + O₂ → CO₂3Consumes methane — prevents CH₄ greenhouse buildup. Earns +2 BP when in a zone with methanogens (sinks their waste).

Rare & Legendary (LI-R / LI-L)

IDName / SpeciesRarityMetabolismSpecial Ability
LI-R-001Cable Bacterium
Candidatus Electrothrix
RLong-distance electron transport (cm-scale filaments)3DRAFT TIER S. Syntrophic link can span ADJACENT ZONES. The only base-set card that links across zone boundaries.
LI-R-002AOM Consortium
ANME archaea + Sulfate-Reducing Bacterium
RAnaerobic oxidation of methane (reverse methanogenesis)3+4 BP syntrophic bonus — highest paired bonus in game. 10-year doubling time by lore. Removes methane from zones.
LI-R-003Radiolysis-Driven Community
Mixed deep subsurface community
RH₂ (from water + radiation) → energy2No surface connection. Functions in any zone with Radiation tokens. The Dark Biosphere — sunlight-independent.
LI-R-004Comammox Organism
Nitrospira inopinata
RNH₃ → NO₃⁻ (complete nitrification in one organism)3Does LI-C-005 + LI-C-006 in one card. Earns the Nitrification Team syntrophy bonus solo. Real organism discovered 2015.
LI-R-005Electroactive Biofilm
Geobacter mixed culture
RDirect electron transfer to minerals (no H₂ intermediate)3Can "charge" iron tokens — converts Fe²⁺ to Fe³⁺ without O₂. Powers the iron cycle in anoxic zones.
LI-L-001Desulforudis audaxviator
Candidatus D. audaxviator
LCompletely self-sufficient: N-fixation + C-fixation + radiolytic H₂4DRAFT TIER S. Needs NO syntrophic partners. Cannot form syntrophic pairs. Found 3.1 km underground in South African gold mine. Real organism.
LI-L-002Deep Carbon Observatory
Theoretical deep consortium
LProcesses carbon from mantle degassing5Highest single-card yield in game. Can only be deployed in Zone 4 or 5 (Project AXIS).
LI-L-003Electrode Organism
Geobacter (engineered)
LDirect electricity generation from waste organics3Generates 1 free Energy Token per turn for any player (shared benefit). Political card — giving opponents energy can be strategically useful.

☀️ PHOTO — Phototrophs "The Engine" (30 cards)

Passive — Light Harvest: +1 Energy Token per turn for their zone.  |  Mechanic — Oxygen Economy: Oxygenic phototrophs produce O₂ each turn — too much kills anaerobic partners.

Common (PH-C-001 to PH-C-012)

IDName / SpeciesRarityMetabolismSpecial
PH-C-001Cyanobacterium
Synechocystis sp.
CH₂O + CO₂ + light → O₂ + organics (oxygenic)3Produces O₂ — enables aerobes, threatens anaerobes. The most impactful common card.
PH-C-002Green Sulfur Bacterium
Chlorobium tepidum
CH₂S + CO₂ + light → S⁰ + organics (anoxygenic)2No O₂ produced — safe for anaerobes. Uses H₂S instead of H₂O. Pairs with sulfate reducers.
PH-C-003Purple Sulfur Bacterium
Chromatium okenii
CH₂S → SO₄²⁻ + organics (anoxygenic photosynthesis)2Deposits elemental sulfur granules internally. Visible as purple-red coloration in real environments.
PH-C-004Purple Non-Sulfur Bacterium
Rhodospirillum rubrum
CLight + organic C → growth (photoheterotroph)2Versatile — can switch to dark fermentation (1 BP) when light unavailable.
PH-C-005Filamentous N-fixing Cyanobacterium
Anabaena sp.
COxygenic photosynthesis + N₂ fixation (heterocysts)3Dual function: produces O₂ AND fixes nitrogen simultaneously. Heterocysts are anaerobic niches within an aerobic filament.
PH-C-006Hot Spring Phototroph
Chloroflexus aurantiacus
CAnoxygenic photosynthesis (flexible)2Facultative: grows in dark as heterotroph (1 BP). Forms filamentous mats in hot springs.
PH-C-007Diatom
Thalassiosira weissflogii
COxygenic photosynthesis (eukaryote)3Silicate frustule (glass shell) provides +1 Event resistance. Uses Cd-carbonic anhydrase when Zn scarce (only Cd metalloenzyme known).
PH-C-008Green Alga
Chlamydomonas reinhardtii
COxygenic photosynthesis + H₂ under anaerobic conditions3Dual output: O₂ in light/aerobic, H₂ in dark/anaerobic. The only phototroph that also feeds methanogens.
PH-C-009Heliobacterium
Heliobacterium modesticaldum
CAnoxygenic photosynthesis (single photosystem)1Simplest photosynthetic organism. Low cost to deploy. Represents earliest photosynthesis evolution.
PH-C-010Prochlorococcus
Prochlorococcus marinus
COxygenic photosynthesis (adapted to blue light)3Most abundant phototroph on Earth. +1 BP in high-light zones. Smallest known photosynthetic organism.
PH-C-011Lichen Photobiont
Trebouxia sp.
CPhotosynthesis (in fungal symbiosis)2PAIRS WITH HALO FUNGAL CARD for +3 BP. Models real lichen mutualism.
PH-C-012Stromatolite Community
Mixed cyanobacteria
COxygenic photosynthesis + CaCO₃ deposition3Creates physical structure — zone permanently gains +1 Event resistance. Builds the oldest macroscopic fossils on Earth.

Rare & Legendary (PH-R / PH-L) — Key Cards

IDNameRaritySpecial Ability
PH-R-001Cyanobacterial Mat (3-Layer)R4Requires 3 Photo organisms in zone. Creates oxic surface + anoxic interior. Both aerobic AND anaerobic organisms can coexist in this zone.
PH-R-002Artificial LeafR4Equipment-organism hybrid. Water splitting via solar → H₂ + O₂ directly. No biological constraints apply.
PH-R-003Coral Holobiont
Symbiodinium + coral
R4Consortium card. +2 Event resistance (reef structure provides physical protection).
PH-R-004Giant Kelp
Macrocystis pyrifera
R5Highest raw yield phototroph. Requires specific conditions (cool, nutrient-rich, light) — but when met, generates more energy than any other single card except LI-L-002.
PH-R-005Chloroplast Origin Event
Endosymbiosis card
RAttach to any eukaryotic organism card — gives it photosynthesis capability. Models the real origin of plant chloroplasts from cyanobacterial endosymbiosis.
PH-L-001Cyanobacterial Mat FormationL5DRAFT TIER S. Requires 3 Photo organisms. Both aerobic and anaerobic organisms coexist in zone. +3 BP/turn for the formation itself.
PH-L-002The Great OxygenationLOne-time play. Permanently changes ALL surface zones to oxic. Cannot be reversed. Wipes all strict anaerobes from surface zones. The most consequential single card in the game.
PH-L-003Light Harvesting Antenna Complex
Theoretical maximum
L6Highest Energy Yield in the game. 99.7% photon capture efficiency. Requires light + water + 4 specific additional resources. Extremely hard to deploy — extremely rewarding when achieved.

🛡️ HALO — Polyextremophiles "The Shield" (30 cards)

Passive — Stress Resistance: +2 to all Event resistance rolls; lose 1 Stress Token naturally per turn.  |  Mechanic — Polyextremophile Bonus: +1 BP/turn per additional stress type tolerated beyond primary.

Common (HA-C-001 to HA-C-012)

IDName / SpeciesRarityPrimary StressMetabolismSpecial
HA-C-001Halophilic Archaeon
Halobacterium salinarum
CSalt (>15% NaCl)2Bacteriorhodopsin — light-driven proton pump (NOT photosynthesis)Unique mechanism: uses light without photosynthesis. Purple membrane creates proton gradient.
HA-C-002Salt Lake Bacterium
Salinibacter ruber
CSalt (>15% NaCl)2Aerobic heterotroph (extreme halophile)Independently evolved many of the same salt-tolerance strategies as haloarchaea — convergent evolution.
HA-C-003Radiation-Resistant Bacterium
Deinococcus radiodurans
CIonizing radiation2Aerobic heterotroph + extreme DNA repairImmune to all Radiation events. +2 BP when radiation present. Survives 5 kGy — 500× lethal human dose.
HA-C-004Desiccation-Resistant Cyanobacterium
Chroococcidiopsis sp.
CDesiccation1Photosynthesis when hydrated; cryptobiosis when dryImmune to desiccation events. Survives complete desiccation for centuries. Best candidate for Mars bioforming.
HA-C-005Acidophilic Iron Oxidizer
Ferroplasma acidiphilum
CAcid (pH 0–1)2Fe²⁺ → Fe³⁺ at extreme acidHas no cell wall — the only wall-less organism in the game. Extreme acidophile + lithotroph combo.
HA-C-006Alkaliphilic Bacterium
Bacillus alcalophilus
CAlkalinity (pH 10–13)2Aerobic heterotroph in soda lakesSoda lake specialist. Functions in zones where pH crashes destroy other organisms.
HA-C-007Psychrophilic Bacterium
Psychrobacter arcticus
CCold (-10 to 10°C)2Aerobic heterotrophPermafrost survivor. Active at -10°C in salt-enriched films. Immune to cold events.
HA-C-008Barophilic Bacterium
Shewanella benthica
CPressure (>1000 atm)2Facultative anaerobeDeep ocean trench specialist. Functional in Zone 5 (Lower Mantle in AXIS). Requires high pressure.
HA-C-009UV-Resistant Cyanobacterium
Gloeocapsa sp.
CUV radiation2Photosynthesis + scytonemin UV shieldingImmune to UV events. Scytonemin is a natural biological sunscreen. Also found in Antarctic rocks.
HA-C-010Heavy Metal Resistant Bacterium
Cupriavidus metallidurans
CHeavy metals2Aerobic heterotroph + metal resistanceImmune to heavy metal events. Found colonizing gold nuggets — literally eats dissolved metals. Gold-associated in real environments.
HA-C-011Endospore Former
Bacillus subtilis
CStarvation / multiple2Aerobic heterotrophSPORULATION: survives any single destructive event unharmed (spore mode), then reforms next turn.
HA-C-012Xerophilic Fungus
Aspergillus penicillioides
CDryness (water activity 0.585)1Heterotroph at extreme drynessEukaryote. Grows in the driest environments where liquid water barely exists. Low energy, high resilience.

Uncommon + Rare + Legendary (HA-U / HA-R / HA-L) — Key Cards

IDName / SpeciesRarityStresses ToleratedSpecial Ability
HA-U-001Tardigrade
Milnesium tardigradum
U1All (cryptobiosis)CRYPTOBIOSIS: survives ANY environmental event. But produces very little energy. The ultimate survivor, poorest scorer.
HA-U-002Bdelloid Rotifer
Adineta vaga
U1Desiccation + radiationDesiccation resistant + acquires 1 Gene Token for free per game via environmental HGT (real biology — bdelloids steal genes from environment)
HA-U-003Black Mold (Melanin Radioprotection)
Cladosporium sphaerospermum
U2Radiation+1 BP per Radiation Token in zone. Real organism grows TOWARD Chernobyl reactor core. Mechanism still uncharacterized in real science.
HA-U-004Lichen Consortium
Usnea sp. (fungus + alga)
U2UV + desiccation + coldSyntrophic pair built into one card — never needs a separate partner card. Models real lichen mutualism.
HA-U-005Deep Mine Nematode
Halicephalobus mephisto
U1Pressure + heat + anoxiaFound 3.6 km underground in South Africa. Can be deployed in Zones 3–4. Multicellular animal — the deepest eukaryote known.
HA-U-006Antarctic Dry Valley Microbe
Mixed community
U2Cold + dry + UV + saltPolyextremophile: +1 BP per stress type active in zone. In a zone with cold + UV + salt events, scores +3 additional BP.
HA-U-007Snottite (Cave Acid Biofilm)
Acidithiobacillus + Acidimicrobium
U2Acid (self-produces sulfuric acid)Creates acidic microenvironment — zone permanently drops 2 pH. Protects from alkaline events. Named for resemblance to stalactites made of mucus.
HA-U-008Hot Acid Alga
Galdieria sulphuraria
U2Acid + heat + desiccationDual suit (also PY-U-006). Can photosynthesize at pH 0–4, 45–56°C simultaneously. Polyextremophile phototroph — rare combination.
HA-U-009Perchlorate-Resistant Bacterium
Marinobacter sp.
U2Perchlorate (Mars toxin)Critical for Mars scenarios. Perchlorate (ClO₄⁻) in Martian regolith is toxic to most Earth organisms. This card is immune.
HA-U-010Nuclear Fuel Pool Bacterium
Deinococcus geothermalis
U2Radiation + heatLives in spent nuclear fuel pools. Immune to both radiation events AND temperature events simultaneously.
HA-R-001Melanin Radiotroph (Enhanced)
Cladosporium sphaerospermum (enhanced)
R3Radiation (beneficial)Triple energy yield in irradiated zones. The radiation IS the food. Converts ionizing radiation → metabolic energy. Grows toward Chernobyl reactor.
HA-R-002Polyextremophilic Archaeon
Haloarcula sp. (deep)
R3Salt + heat + pressureTolerates all three simultaneously. +1 BP per stress type. In a zone with 3+ stresses, scores +3 additional BP.
HA-R-003Self-Repairing Biofilm
Mixed polyextremophile community
R3MultipleAutomatically removes 1 Stress Token per turn from ALL organisms in the zone. Acts as zone-wide healer.
HA-R-004Cryptoendolith
Friedmannia sp.
R2UV + desiccation + coldLives inside Antarctic rock. Immune to ALL surface events (rock provides physical shielding). Slow but genuinely invulnerable.
HA-R-005Bdelloid Rotifer Colony
Philodina sp. (colony)
R2Desiccation + gene scavengingCan copy one ability from any organism in the same zone (once per game). Models bdelloid promiscuous gene acquisition from environment.
HA-L-001Conan the Bacterium
Deinococcus radiodurans (ultimate)
L3Radiation + desiccation + UV + coldImmune to all events. But requires O₂ + organic carbon — dependent on others for food. Maximum survivability, moderate dependency.
HA-L-002The Dark Biosphere
Theoretical deep-life consortium
L5All subsurface stressesDeploy only in Zones 4–5. Completely independent of surface — generates own energy, fixes own C and N. Represents the deep hot biosphere hypothesis (Thomas Gold).
HA-L-003Extremophile Chimera
Synthetic polyextremophile
L4All (synthetic)All stress resistances + flexible metabolism. Deploy anywhere. Deploy cost: 8 Energy — most expensive card. Worth it if you can afford it.

Complete Base Set: 120 Cards

Pyro (30) · Litho (30) · Photo (30) · Halo (30)

See index.html for printable card sheets  |  See rulebook.html for complete rules, AXIS cooperative mode, tournament format, curriculum, and Kickstarter analysis

All organisms and metabolisms are based on real science. Every combo you discover is a real metabolic pathway.