OSR Adventure Fodder - d100 random encounter table designed for a high-octane 1930s pulp adventure, optimized for Amazing Adventures (using SIEGE Engine / d20 OSR math)

 Here is a d100 random encounter table designed for a high-octane 1930s pulp adventure, optimized for Amazing Adventures (using SIEGE Engine / d20 OSR math) while drawing on the tropes, villains, and modules of the Pulps. This post picks up from OSR Campaign Slab - Amazing Adventures Rpg - Weird War II Campaign

Pulp Adventure Wilderness & Remote Front-Line Encounters (d100)

• SIEGE Check Base: Primary = CL 12 | Secondary = CL 18.

• Fate Points: Major threats allow spending 1 Fate Point to double effect or avoid instant death.

d100	Encounter / Event	Mechanics & Features
01–05	Rogue Biplane Strafe	An unflagged Curtiss Jenny dives out of the clouds with machine guns blazing. Vehicle HD 4, AC 15, Pilot SIEGE Dexterity check to evade.
06–10	Cult of the Obsidian Eye	2d6 Cultist Zealots ambush from concealment, wielding poisoned kris daggers. HD 1, AC 12, Poison requires SIEGE Constitution check.
11–15	Thundering Stampede	A panicked herd of rhinos, dinosaurs, or wild cattle charges through camp. SIEGE Dexterity or Strength check to dodge/divert; failure = 3d6 bludgeoning.
16–20	Mercenary Patrol (Thule Syndicate / Red Star)	1d6+2 uniformed mercenaries led by a ruthless Squad Leader with a Thompson submachine gun. HD 2 (Leader HD 4), AC 14, Automatic Fire rules apply.
21–25	Quicksand / Tar Pit Hazard	The lead character steps into treacherous mud or ancient pitch. SIEGE Strength check to break free before sinking in 1d4 rounds.
26–30	Mad Scientist’s Automaton	A clanking, 8-foot brass automaton powered by a glowing vacuum tube heart. HD 6, AC 18 (Hardness 5), Vulnerable to electricity or targeting the heart tube.
31–35	Rival Archaeologist / Treasure Hunter	A charismatic rival (e.g., Femme Fatale or Dashing Rogue) offers a temporary truce—or steals a key map fragment while camp sleeps. SIEGE Wisdom (Insight) to catch.
36–40	Cryptid Attack (Yeti / Ape-Man)	A giant primeval ape hurls boulders from high cliffs before charging into melee. HD 5, AC 14, Hurls boulders (2d8 damage, Range 60 ft).
41–45	Ruin Trap: Pressure Plate & Pendulum	Collapsing ancient ruins trigger a swinging blade or dart volley. SIEGE Dexterity check to avoid; 2d10 damage.
46–50	Stranded Airship / Plane Wreck	A downed cargo plane suspended in the jungle canopy. Contains 1d4 supply crates (Ammo, Rations, Dynamite) guarded by starving predators.
51–55	Venomous Swarm (Locusts / Driver Ants)	A wall of biting insects sweeps through the area. Requires immediate movement or fire/smoke to disperse; 1d4 damage/round + blindness.
56–60	The Mysterious Hermit / Mystic	An old monk or exiled scholar who shares a cryptogram leading to a nearby tomb if treated with respect.
61–65	Ghost Ship / Derelict Truck Convoy	Abandoned vehicles with strange, frost-covered interior or burnt markings—hints at occult experiments nearby.
66–70	Occult Ritual in Progress	A High Priest and 1d4+1 acolytes channeling a dimensional rift. A summoned Lesser Fiend or Shadow Horror emerges in 1d4 turns if unbroken.
71–75	Poison Dart Trap Network	Hidden tripwires set by hostile native tribes guarding forbidden borders. SIEGE Intelligence or Wisdom check to spot; 1d6 damage + Sleep Venom.
76–80	Armored Half-Track Patrol	A heavily armored truck with a mounted machine gun or flamethrower patrolling dirt trails. Vehicle HD 6, AC 17, Mounted Gun 3d6 damage.
81–85	Volcanic Fissure / Earth Tremor	The ground splits open emitting toxic sulfur gas. SIEGE Constitution check or suffer 1d6 poison damage and choking.
86–90	Giant Reptile / Megalania	A 20-foot monitor lizard or surviving Carnotaurus hunting for meat. HD 7, AC 15, Bite & Grab attack (2d8+4).
91–95	Hypnotic Sound / Psychic Resonance	A strange frequency emanating from an ancient monolith. SIEGE Charisma check or become charmed/confused for 1d6 rounds.
96–99	The Nemesis Arrives	The campaign’s recurring Mastermind or Archnemesis appears with 2d4 elite henchmen, demanding an artifact or offering a sinister ultimatum.
100	Ancient Kaiju / Awoken Elder Entity	The earth shakes as a massive 50-foot guardian construct or elder beast rouses from slumber. HD 12+, Requires heavy explosives, artillery, or ancient levers to defeat.

Running Encounters in Amazing Adventures

• Initiative: Simple d6 roll per side (High roll goes first).

• Cinematic Action Checks: Allow players to use Fate Points or attempt creative SIEGE attribute checks (e.g., swinging on vines using Dexterity, shooting fuel tanks using Intelligence) to resolve combat through pulp spectacle rather than slow attrition.