[Rookiss] Introduction to Claude Harness (Interactive Textbook)
Conversation loops, tool calling, permissions, prompt assembly — learn the core principles of Claude Code by visualizing them through 3D interactive materials. Translate the structure you understood from the materials directly into code to complete your very own 'Mini Claude Code (Harness)'.
News
2 articles
Hello, I’ll be hosting a live stream next week for the first time in a while.
Time: Sunday (November 1, 2026) at 8:00 PM
Location: Discord Live broadcast room https://discord.gg/bNCXwskEp
Topic: Sharing the results of AI game development and preview of the KDC government-funded course (limited to 1,000 participants)Summary:
Our team has successfully developed a prototype development process capable of creating virtually any game except those requiring AAA quality,
at just 1/10,000 of the usual budget.
Of course, although we say it is done 100% with AI, it is not something that can be achieved simply by entering a prompt once;
we are conducting a wide variety of experiments and creating custom tools to make it happen.
As a result, by utilizing a 100% AI-based process, we have reached a level where we can create a truly diverse range of games, from <bare-bones hyper-casual games>
to <the level of stylized art seen in Genshin Impact>.
If only certain types of games had been possible, we would have kept this strictly confidential within our team and focused on producing games ourselves, but
if there is a problem, the problem is that "too many" things are working too well.
The token costs are too much to handle if we want to create everything from bare-bones games to high-end titles.
In other words, this winning lottery ticket is simply too much for us to cash in on by ourselves.
Therefore, we plan to once again attempt to serve as an intermediary bridge by sharing some lower-level technologies with select collaborators and
publishing the games that are developed.
We will be holding a briefing on this on November 1 at 8:00 p.m.
Below is WindVale, the open-world game I am currently developing on my own.
In just one week since starting development alone, I have already secured an amount of content that would take a professional studio of 50 people
two years to produce.
More details will be revealed next week.
- Detailed information about the 1,000 available spots and an explanation of the KDC government-funded program
- What our successful 100% AI development process implies (how game companies of the future will change)
Advice on future directions for job seekers
and more will be covered in next week’s live briefing.Recreating other games is of course also possible.
Hello, this is Rookiss.
The interactive textbook series has been in production since July.
- Introduction to Claude Code (Cursor will also be added to this week's lecture) https://inf.run/DqW9T
- Claude Harness https://inf.run/zrKXB
- Introduction to CS https://inf.run/fcJpz
- Introduction to Python https://inf.run/1etHe
Now that the basic lineup is complete, I plan to move on to intermediate & advanced lectures for a while.
- In August, Mathematics (Functions/Calculus/Linear Algebra/Probability & Statistics) lectures.
- Starting from September, DX12, Network Engines, etc., are scheduled.
Society has become truly difficult due to AI.
As a result, I've been receiving many questions regarding career paths and studies lately.
Last Sunday, I held a seminar on the direction of study that I envision,
so please refer to Rookiss Live Seminar: Tower of Rookiss for more details.
https://www.youtube.com/watch?v=ZYnbclmSjB4&t=4217s
[Tower of Rookiss] Pre-announcement of the 2027-2028 curriculum.
I plan to operate a large number of government-funded lectures starting next year.

