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Cover of THE COMPLETE ALIEN INVASION GAMEMASTER’S TOOLKIT

THE COMPLETE ALIEN INVASION GAMEMASTER’S TOOLKIT

Solo RPG · by Eduardo Camps · in English
AI
On Quisicosas since 9 December 2025
Featured in the newsletter of 9 December 2025 (on Substack)

What it is about

They didn’t just arrive. They occupied. This toolkit gives you everything you need to run fast, brutal, and cinematic campaigns in a city under alien rule—using any modern, cyberpunk, or sci‑fi RPG system. Packed with hundreds of d20 tables, this book lets you build a full invasion on the fly: from the nature of the invaders and their war machine, to the shattered streets, desperate survivors, and impossible missions that define life under occupation. Use it to prep a full campaign in minutes, improvise entire sessions, or drop in individual tables as inspiration for your existing game. What’s Inside Module 1 – Alien Species Profile Create your invaders in a few rolls: Primary alien species and archetype Invasion motives and goals Communication methods and culture Command structure, weaknesses, and hidden truths Build anything from parasitic hive minds and crystalline overminds to misguided “galactic administrators” enforcing cosmic law. Module 2 – Alien War Machine Detail the tools of conquest: Signature technologies and superweapons Motherships and orbital assets Standard ground units and battlefield roles Command hierarchies and occupation strategies Perfect for designing set‑piece battles, resistance raids, and terrifying reveals of what the aliens can really do. Module 3 – Invasion Assets Turn the planet into a warzone: Mothership archetypes and orbital structures Standard alien weapons and battlefield gear Experiments on humanity and hybrid projects Official propaganda, broadcasts, and “mercy offers” Use these tables to show how the invasion reshapes everyday life and what the occupiers truly want from humanity. Module 4 – Urban Characters & NPCs Populate your ruined city with memorable people: Survivor archetypes, collaborators, fanatics, and renegades Physical appearance, personality traits, secrets, and motivations Relationships to the PCs and what they want from them What they can offer in return—and what complications they bring Instantly generate rich NPCs who feel like they’ve been living under the invasion for years. Module 5 – City Districts & Locations Turn any map into a living, suffering city: District types, conditions, and who controls them Security levels, atmospheres, and street encounters Notable locations, ambient details, and district secrets Great for sandbox play: roll up a district, drop the PCs in, and watch the story explode. Module 6 – Technology & Alienware Blend human ingenuity with alien horror: Improvised resistance weapons and gear Exotic alien weapons, devices, and stolen tech Human experimental prototypes and bio‑enhancements Side effects, malfunctions, and how this tech was acquired Ideal for groups who love tinkering, hacking, and paying the price for using things they don’t fully understand. Module 7 – Netrunning & Digital Warfare For cyberpunk‑flavoured invasions and data‑driven resistance: Target systems, security ratings, and ICE types Hacking objectives, virtual environments, and complications Alert levels, responses, data value, and intrusion consequences Run tense digital heists alongside street‑level action without needing a separate ruleset. Module 8 – Missions & Jobs Build entire campaigns around the resistance: Mission types, employers, targets, and locations Time pressure, opposition, complications, and twists Entry and extraction methods, collateral damage, and aftermath From desperate extractions and sabotage runs to political deals and false‑flag operations, you’ll never run out of hooks. Module 9 – Factions & Gangs Map the fractured human (and alien) power structure: Resistance cells, collaborator regimes, cults, gangs, and more Strengths, weaknesses, resources, and current situations Goals, rituals, and their relationship with the PCs Turn the city into a web of alliances and betrayals where every favour has a cost. Module 10 – Random Tables & Urban Dressing Bring the occupied city to life at the table: Names, callsigns, and street nicknames Weather, sounds, smells, and visual details Street encounters, rumours, found items, and lucky breaks Quick complications and scene‑level twists Perfect for improvisation and for giving every session a distinct, cinematic feel. System & Format System‑neutral: Written without stats so you can plug it into any modern, cyberpunk, horror, or sci‑fi RPG. Urban‑focused: Designed for campaigns set in cities under alien occupation. Table‑driven: Around 90 d20 tables for maximum replay value and zero‑prep sessions. Print‑friendly: Layout designed to work in both colour (neon alien glow) and black‑and‑white. Use This Toolkit To Launch a full alien invasion campaign in a single evening. Salvage a stalled game with fresh missions, factions, and twists. Improvise entire sessions with nothing but a handful of dice. Drop an invasion arc into an existing cyberpunk or modern setting. If you want your players to feel the weight of occupation, the terror of orbital fire, and the fragile hope of resistance fighters on the edge of extinction, THE COMPLETE ALIEN INVASION GAMEMASTER’S TOOLKIT gives you everything you need, and this one is FREE. TAG UNIVERSAL RPG — My flagship tag-based system. Grab the bundle! For a lot more toolkits check my Toolkit Section! For a collection of Settings for your games see my Settings Section! For incredible original RPG's visit my RPG Section!

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