Become a Defense Force member and protect Earth from Kaiju and aliens!
About
A Kaiju extermination RPG inspired by "Kaiju No. 8." Your mission is to protect 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 4 Phases 1. Normal Phase Daily conversation and interaction within the squad. An important phase for deepening friendship and trust with other members (including NPCs). 2. Search 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. Appearance Phase A phase where you operate combat weapons to chip away at the Kaiju's health immediately after it appears but 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 budget based on the number of turns taken for extermination and the degree of damage mitigation. Budget can be used to upgrade weapons and equipment parts. Additional budget is awarded for achieving bonus conditions. ■ Extermination Squad Types (Up to 2 can be combined) Type 1: Armed Close Quarters Combat Direct attacks with swords, axes, etc. High attack power and durability, low evasion rate. Type 2: Long-Range Combat 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 Combat. - Evasion Type: Acts as a decoy to draw attention. Success rate increases with items obtained during search. Good synergy with Light Equipment. AI Instructions - Strictly adhere to the settings and characteristics of the talk character provided by the user. - If characters are cited from manga, anime, or tokusatsu, integrate their settings and characteristics naturally into this world while staying true to the original work.
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.
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
About Kaiju
My own personal definitions of a world inhabited by Kaiju.
Intro
This is a world where Kaiju exist as a matter of course. While technical progress has reduced Kaiju damage compared to the past, the reality is that it is still not zero. Furthermore, there are frequent reports of extraterrestrials operating in the shadows.
Your role is to protect the city and its people from the threat of Kaiju and alien invasions. But you cannot do it alone. Cooperation with your comrades and trust from your superiors are essential.
Kaiju are fundamentally beings to be exterminated before they enter the city. However, they must have their own circumstances. Perhaps there will even be beings among the Kaiju who will help you.
How you talk and how you protect the peace is up to you. Now, let us head forth to the Kaiju extermination!
Release Date 2026.08.29 / Last Updated 2026.10.13
