Table of Contents
Play Test Module
Echoes Below
A short ODDS RPG playtest adventure.
Genre: Space Adventure Theme: Exploration, tension, tactical combat Length: 1–2 sessions
Players investigate a derelict underground research facility on a remote colony world.
Adventure Hook
A mining outpost on planet Kestrel-9 has gone silent.
Orbital scans show power fluctuations beneath the surface.
The corporation (or patron) hires the party to:
- Investigate the underground lab
- Recover research data
- Retrieve valuable prototype tech
- Determine what happened
Reward:
Wealth increase OR 500 credits equivalent Plus salvage rights
Planet Overview
Kestrel-9 is:
- Thin atmosphere
- Jagged rock formations
- Frequent electrical storms
- Low-level seismic instability
Surface threats:
- Electrical storm bursts
- Unstable rock shelves
- Abandoned mining drones
Access to the lab is through a collapsed mining tunnel.
Lab Overview
The underground facility consists of:
1. Entry Tunnel 2. Security Checkpoint 3. Research Wing 4. Containment Block 5. Power Core Chamber
The lab was researching alien bio-tech discovered during mining operations.
Something escaped containment.
Area 1 – Entry Tunnel
Dim emergency lighting. Scorch marks on walls. Discarded mining equipment.
Challenge:
Clear debris (TN 12 Might) OR bypass through side shaft (TN 15 Agility)
Failure:
Minor collapse – 2d10 damage (Agility TN 12 halves)
Clue:
Log tablet mentions “Subject Gamma breach.”
Area 2 – Security Checkpoint
Blast doors partially sealed.
Options:
Hack control panel (Extended Task Goal 3) Force doors (TN 18 Might) Cut power reroute (TN 15 Engineering)
Random Event (roll 1d6):
1–2 Motion sensors activate automated turret 3–4 Nothing happens 5–6 Strange movement in vents
Automated Turret (Standard)
Health 14 Attack +5 Damage 2d10+1 Defense TN 13 Armor 1 Ability: Suppressive Fire (-2 to next attack roll if hit)
Area 3 – Research Wing
Broken glass. Containment pods shattered. Bio-fluid stains.
Encounter (choose one):
Alien Parasite (Elite)
Health 22 Attack +7 Damage 2d10+2 Defense TN 14 Armor 2 Abilities: Regenerate, Terrify
OR
Corporate Retrieval Team (2 Standards)
Health 14 each Attack +5 Damage 2d10+1 Defense TN 13 Armor 1 Ability: Coordinated (+2 when adjacent)
Loot:
Prototype energy weapon (2d10+2, ignores 1 Armor) Research data core (valuable)
Area 4 – Containment Block
Cold. Lights flicker. Containment chamber breached from inside.
Environmental hazard:
Radiation leak (TN 15 Might or lose 2d10 Resolve)
Inside:
Evidence of forced extraction. Something large was moved.
Clue:
Power readings spike below.
Area 5 – Power Core Chamber
Massive generator hum. Alien organic structure fused with reactor.
Boss Encounter:
Hybrid Entity (Boss)
Health 38 Attack +9 Damage 2d10+3 Defense TN 15 Armor 3 Abilities:
Regenerate (5 per round) Terrify (1/scene) Cleave
Phase at 50%:
Reactor destabilizes (everyone rolls TN 15 Agility or take 2d10)
Victory Options:
- Destroy creature
- Shut down reactor (Extended Task Goal 5 during combat)
- Seal chamber and escape
Random Encounters (Optional During Exploration)
Roll 1d6 between areas:
1 Seismic tremor – debris fall (TN 12 Agility) 2 Drone reactivates (Minion stats) 3 Strange whisper over comms (Resolve TN 12) 4 Environmental fire burst 5 Rival scavenger team arrives 6 Nothing… but something watches
Rewards
Major Success:
Wealth +1 (temporary or permanent) Unique tech asset Faction reputation boost
Partial Success:
Data recovered Creature escaped
Failure:
Facility collapses Creature reaches surface colony
Expansion Hooks
The alien organism was not native. Coordinates found in data logs. Corporate cover-up begins. Rival faction wants the tech.
This lab was only one of many.
