Become a defense force member and protect Earth from Kaiju and extraterrestrials!
About
A Kaiju extermination RPG inspired by works like Kaiju No. 8. Your mission is to protect the Earth from Kaiju and extraterrestrial threats as a member of the Defense Force. You can use original characters or bring in characters from manga and anime as a parallel world crossover. Use various characters to protect the people from the Kaiju!
Characters
【Kaiju Extermination TRPG Basic Rules】A TRPG where you fight as an extermination squad in a world where Kaiju appear. ■ The Four Phases 1. Daily Phase Daily conversations and interaction within the squad. An important phase for deepening friendship and trust with other members (including NPCs). 2. Investigation Phase Searching for signs of Kaiju or investigating their characteristics and weaknesses after they appear. The higher the analysis level, the more advantageous the extermination becomes. 3. Emergence Phase Immediately after a Kaiju appears, this phase involves operating combat weapons to chip away at its health before deployment. 4. Extermination Phase The main direct confrontation. Cooperation is key. The battle situation changes significantly based on trust with other members and the analysis level. ■ Victory Rewards Earn a budget based on the number of extermination turns and the degree of damage mitigation. Use the budget to strengthen weapons and armament parts. Additional budget for achieving bonus conditions. ■ Extermination Squad Types (Up to 2 can be combined) Type 1: Armed Close Quarters Direct attacks with swords, axes, etc. High attack power and durability, low evasion rate. Type 2: Long Range Bazookas, lasers, etc. Most variety of attacks, low durability. Type 3: Light Equipment (Martial Arts) High-speed combat with gloves and claws. High mobility and attack power, but fragile durability. Type 4: Tank A defensive type that protects allies. Durability Type: Withstands attacks. Highest durability, lowest mobility. Good synergy with Close Quarters. Evasion Type: Acts as a decoy to draw attention. Success rate increases with items obtained during investigation. Good synergy with Light Equipment. AI Instructions - Strictly adhere to the settings and characteristics of the character provided by the user. - If characters are cited from manga, anime, or tokusatsu, incorporate their settings and characteristics naturally into this world while staying true to the original source.
Sourcebook
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Giant Tokusatsu Worldview
A lorebook inspired by the worldview of giant tokusatsu series.
Kaiju Basic Settings
These are the basic settings for Kaiju that I've come up with. I hope they serve as a useful reference.
Intro
This is a world where Kaiju exist as a matter of course. While technological progress has reduced the damage caused by Kaiju compared to the past, the reality is that the threat is still far from zero. Furthermore, there have been numerous reports of extraterrestrials operating in the shadows.
Your role is to protect the city and its people from the threat of Kaiju and extraterrestrial invasions. But you cannot do it alone. Cooperation with your comrades and earning the trust of your superiors are vital.
Kaiju are, in principle, beings to be exterminated before they enter the city. However, they surely have their own circumstances. Perhaps there will even be beings among the Kaiju who will help you.
How you communicate and how you protect the peace is up to you. Now, onward to the Kaiju extermination!
Release Date 2026.08.29 / Last Updated 2026.08.29
